SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Corteva, Inc., et al. – ‘10-K’ for 12/31/19 – ‘EX-101.DEF’

On:  Friday, 2/14/20, at 7:29am ET   ·   For:  12/31/19   ·   Accession #:  1755672-20-6   ·   File #s:  1-00815, 1-38710

Previous ‘10-K’:  None   ·   Next:  ‘10-K’ on 2/11/21 for 12/31/20   ·   Latest:  ‘10-K’ on 2/8/24 for 12/31/23   ·   5 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/14/20  Corteva, Inc.                     10-K       12/31/19  199:36M
          Dupont E I De Nemours & Co

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   4.78M 
 2: EX-4.1      Instrument Defining the Rights of Security Holders  HTML     67K 
 3: EX-4.2      Instrument Defining the Rights of Security Holders  HTML     60K 
 4: EX-21       Subsidiaries List                                   HTML    135K 
 5: EX-23.1     Consent of Experts or Counsel                       HTML     53K 
 6: EX-23.2     Consent of Experts or Counsel                       HTML     53K 
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     67K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     68K 
 9: EX-32.1     Certification -- §906 - SOA'02                      HTML     57K 
10: EX-32.2     Certification -- §906 - SOA'02                      HTML     57K 
90: R1          DEI Document                                        HTML    139K 
164: R2          Consolidated Statements of Income                   HTML    154K  
132: R3          Consolidated Statements of Comprehensive Income     HTML     90K  
28: R4          Consolidated Balance Sheets                         HTML    202K 
87: R5          Consolidated Balance Sheets (Parentheticals)        HTML     74K 
161: R6          Consolidated Statements of Cash Flows               HTML    254K  
130: R7          Consolidated Statements of Equity                   HTML    162K  
24: R8          Consolidated Statements of Equity (Parentheticals)  HTML     60K 
93: R9          Schedule II - Valuation and Qualifying Accounts     HTML     94K 
                (Notes)                                                          
179: R10         Background and Basis of Presentation (Notes)        HTML     83K  
153: R11         Summary of Significant Accounting Policies          HTML    113K  
34: R12         Recent Accounting Guidance                          HTML     92K 
101: R13         Business Combinations                               HTML     98K  
176: R14         Divestitures and Other Transactions                 HTML    247K  
150: R15         Revenue (Notes)                                     HTML    140K  
31: R16         Restructuring and Asset Related Charges             HTML    130K 
98: R17         Related Parties (Notes)                             HTML     60K 
175: R18         Supplementary Information                           HTML    138K  
154: R19         Income Taxes                                        HTML    243K  
47: R20         Earnings Per Share of Common Stock (Notes)          HTML    119K 
69: R21         Accounts and Notes Receivable, Net                  HTML     71K 
183: R22         Inventories                                         HTML     62K  
113: R23         Property, Plant and Equipment                       HTML     74K  
44: R24         Goodwill and Other Intangible Assets                HTML    167K 
66: R25         Leases (Notes)                                      HTML    112K 
180: R26         Short-Term Borrowings, Long-Term Debt and           HTML    134K  
                Available Credit Facilities                                      
110: R27         Commitments and Contingent Liabilities              HTML    117K  
48: R28         Stockholders' Equity                                HTML    236K 
65: R29         Pension Plans and Other Post Employment Benefit     HTML    561K 
                Plans                                                            
103: R30         Stock-Based Compensation                            HTML    196K  
36: R31         Financial Instruments                               HTML    174K 
145: R32         Fair Value Measurements                             HTML     99K  
171: R33         Geographic Information                              HTML     88K  
106: R34         Segment Reporting (Notes)                           HTML    191K  
39: R35         Quaterly Financial Data                             HTML    189K 
148: R36         Subsequent Events (Notes)                           HTML     55K  
174: R37         EID Basis of Presentation (Notes)                   HTML    105K  
107: R38         EID Related Party (Notes)                           HTML     65K  
35: R39         EID Income Taxes (Notes)                            HTML    327K 
71: R40         EID Segment FN (Notes)                              HTML    217K 
51: R41         EID Quarterly FN (Notes)                            HTML    233K 
126: R42         Background and Basis of Presentation (Policies)     HTML     95K  
197: R43         Summary of Significant Accounting Policies          HTML    198K  
                (Policies)                                                       
72: R44         Recent Accounting Guidance Recent Accounting        HTML     91K 
                Guidance (Policies)                                              
53: R45         Recent Accounting Guidance Accounting               HTML     83K 
                Pronouncements (Tables)                                          
127: R46         Business Combinations (Tables)                      HTML     98K  
198: R47         Divestitures and Other Transactions (Tables)        HTML    237K  
74: R48         Revenue (Tables)                                    HTML    133K 
49: R49         Restructuring and Asset Related Charges (Tables)    HTML    125K 
18: R50         Supplementary Information (Tables)                  HTML    138K 
85: R51         Income Taxes (Tables)                               HTML    244K 
167: R52         Earnings Per Share of Common Stock (Tables)         HTML    129K  
143: R53         Accounts and Notes Receivable, Net (Tables)         HTML     65K  
17: R54         Inventories (Tables)                                HTML     62K 
84: R55         Property, Plant and Equipment (Tables)              HTML     75K 
166: R56         Goodwill and Other Intangible Assets (Tables)       HTML    154K  
142: R57         Leases (Tables)                                     HTML    115K  
20: R58         Short-Term Borrowings, Long-Term Debt and           HTML    127K 
                Available Credit Facilities (Tables)                             
82: R59         Commitments and Contingent Liabilities (Tables)     HTML     75K 
192: R60         Stockholders' Equity (Tables)                       HTML    243K  
120: R61         Pension Plans and Other Post Employment Benefit     HTML    545K  
                Plans (Tables)                                                   
59: R62         Stock-Based Compensation (Tables)                   HTML    173K 
78: R63         Financial Instruments (Tables)                      HTML    170K 
191: R64         Fair Value Measurements (Tables)                    HTML     95K  
119: R65         Geographic Information (Tables)                     HTML     91K  
58: R66         Segment Reporting (Tables)                          HTML    196K 
77: R67         Quaterly Financial Data (Tables)                    HTML    186K 
187: R68         EID Income Taxes (Tables)                           HTML    223K  
123: R69         EID Segment FN (Tables)                             HTML    101K  
136: R70         EID Quarterly FN (Tables)                           HTML    230K  
157: R71         Schedule II - Valuation and Qualifying Accounts     HTML     78K  
                (Details)                                                        
94: R72         Background and Basis of Presentation (Details)      HTML     79K 
23: R73         Summary of Significant Accounting Policies          HTML     81K 
                (Details)                                                        
137: R74         Recent Accounting Guidance Lease ASU - Effect on    HTML     95K  
                Balance Sheet (Details)                                          
158: R75         Business Combinations DAS Common Control Transfer   HTML    120K  
                - Balance Sheet (Details)                                        
95: R76         Business Combinations DAS Common Control Transfer   HTML     98K 
                Income Statement (Details)                                       
25: R77         Divestitures and Other Transactions Divestitures    HTML    115K 
                and Other Transactions - Narrative (Details)                     
133: R78         Divestitures and Other Transactions ECP             HTML    199K  
                Divestiture (Details)                                            
163: R79         Divestitures and Other Transactions SP Divestiture  HTML    229K  
                (Details)                                                        
135: R80         Divestitures and Other Transactions Divestitures    HTML    110K  
                and Other Transactions - Divested Ag Business                    
                Results of Operations (Details)                                  
156: R81         Divestitures and Other Transactions Divestitures    HTML     58K  
                and Other Transactions - Divested Ag Business                    
                Depreciation and Capital Expenditures (Details)                  
91: R82         Divestitures and Other Transactions Divestitures    HTML     95K 
                and Other Transactions - PChem Results of                        
                Operations (Details)                                             
21: R83         Revenue Narrative (Details)                         HTML     60K 
139: R84         Revenue Contract Balances (Details)                 HTML     70K  
160: R85         Revenue Disaggregation of Revenue - Products        HTML     88K  
                (Details)                                                        
96: R86         Revenue Disaggregation of Revenue - Geo (Details)   HTML    101K 
26: R87         Restructuring and Asset Related Charges DowDuPont   HTML    106K 
                Agriculture Division Restructuring Program                       
                (Details)                                                        
131: R88         Restructuring and Asset Related Charges DowDuPont   HTML    111K  
                Cost Synergy Program (Details)                                   
162: R89         Restructuring and Asset Related Charges Asset       HTML     62K  
                Impairments (Details)                                            
193: R90         Related Parties Services Provided by and to Dow     HTML     61K  
                (Details)                                                        
121: R91         Related Parties Transactions with DowDuPont         HTML     64K  
                (Details)                                                        
61: R92         Supplementary Information Other Income (Expense) -  HTML    116K 
                Net (Details)                                                    
80: R93         Supplementary Information Foreign Currency          HTML     81K 
                Exchange Gain (Loss) (Details)                                   
189: R94         Supplementary Information Reconciliation of Cash,   HTML     78K  
                Cash Equivalents and Restricted Cash (Details)                   
117: R95         Supplementary Information Supplementary             HTML     58K  
                Information (Narrative) (Details)                                
57: R96         Income Taxes Income Taxes - Narrative (Details)     HTML     66K 
76: R97         Income Taxes Income Taxes - Geographic Allocation   HTML     99K 
                of Income and Provision for Income Taxes (Details)               
188: R98         Income Taxes Income Taxes - Reconciliation to US    HTML    127K  
                Statutory Rate (Details)                                         
124: R99         Income Taxes Income Taxes - Deferred Tax Balances   HTML    110K  
                (Details)                                                        
196: R100        Income Taxes Income Taxes - Operating Loss and Tax  HTML     65K  
                Credit Carryforwards (Details)                                   
125: R101        Income Taxes Income Taxes - Gross Unrecognized Tax  HTML     83K  
                Benefits (Details)                                               
50: R102        Earnings Per Share of Common Stock Net Income for   HTML     91K 
                EPS Calc Basic and Diluted (Details)                             
70: R103        Earnings Per Share of Common Stock EPS Calculation  HTML     67K 
                - Basic (Details)                                                
199: R104        Earnings Per Share of Common Stock EPS Calculation  HTML     68K  
                - Diluted (Details)                                              
128: R105        Earnings Per Share of Common Stock Share Count      HTML     80K  
                Information (Details)                                            
54: R106        Accounts and Notes Receivable, Net (Schedule of     HTML     76K 
                Accounts and Notes Receivable, Net) (Details)                    
73: R107        Accounts and Notes Receivable, Net Customer         HTML     60K 
                Financing (Details)                                              
195: R108        Inventories Schedule of Inventory (Details)         HTML     72K  
129: R109        Property, Plant and Equipment Schedule of           HTML     89K  
                Property, Plant and Equipment (Details)                          
144: R110        Property, Plant and Equipment Schedule of           HTML     55K  
                Depreciation (Details)                                           
168: R111        Goodwill and Other Intangible Assets Goodwill by    HTML    108K  
                Segment (Details)                                                
86: R112        Goodwill and Other Intangible Assets Other          HTML    107K 
                Intangible Assets (Details)                                      
19: R113        Goodwill and Other Intangible Assets Amortization   HTML     74K 
                Expense (Details)                                                
141: R114        Leases Narrative (Details)                          HTML     62K  
165: R115        Leases Lease Costs (Details)                        HTML     68K  
83: R116        Leases Supplemental Cash Flow Information           HTML     58K 
                (Details)                                                        
16: R117        Leases Supplemental Balance Sheet Information       HTML     81K 
                (Details)                                                        
140: R118        Leases Lease Term and Discount Rate (Details)       HTML     61K  
169: R119        Leases Maturity of Lease Liabilities (Details)      HTML     90K  
79: R120        Leases Future Minimum Lease Commitments (Details)   HTML     73K 
60: R121        Short-Term Borrowings, Long-Term Debt and           HTML     70K 
                Available Credit Facilities Short-Term Borrowings                
                and Capital Lease Obligations (Details)                          
122: R122        Short-Term Borrowings, Long-Term Debt and           HTML     99K  
                Available Credit Facilities Long Term Debt                       
                (Details)                                                        
194: R123        Short-Term Borrowings, Long-Term Debt and           HTML     77K  
                Available Credit Facilities Available Committed                  
                Credit Facilities (Narrative) (Details)                          
75: R124        Short-Term Borrowings, Long-Term Debt and           HTML    148K 
                Available Credit Facilities Debt                                 
                Redemptions/Repayments (Details)                                 
56: R125        Short-Term Borrowings, Long-Term Debt and           HTML     55K 
                Available Credit Facilities Uncommitted Credit                   
                Facilities and Outstanding Letters of Credit                     
                (Details)                                                        
118: R126        Commitments and Contingent Liabilities Guarantee    HTML     61K  
                Narrative (Details)                                              
190: R127        Commitments and Contingent Liabilities Litigation   HTML     65K  
                - Chemours (Details)                                             
81: R128        Commitments and Contingent Liabilities Litigation   HTML     71K 
                - DuPont (Details)                                               
55: R129        Commitments and Contingent Liabilities Litigation   HTML     96K 
                - Leach and MDL Settlement (Details)                             
22: R130        Commitments and Contingent Liabilities Litigation   HTML     56K 
                - Fayetteville (Details)                                         
92: R131        Commitments and Contingent Liabilities              HTML     86K 
                Environmental (Details)                                          
155: R132        Stockholders' Equity Common Stock (Details)         HTML     89K  
134: R133        Stockholders' Equity Noncontrolling Interest        HTML     68K  
                (Details)                                                        
27: R134        Stockholders' Equity Other Comprehensive Income     HTML    123K 
                (Loss) (Details)                                                 
97: R135        Stockholders' Equity Tax Benefit (Expense) on Net   HTML     63K 
                Activity (Details)                                               
159: R136        Stockholders' Equity Reclassifications out of AOCI  HTML    152K  
                (Details)                                                        
138: R137        Pension Plans and Other Post Employment Benefit     HTML    121K  
                Plans Additional Information (Details)                           
29: R138        Pension Plans and Other Post Employment Benefit     HTML     58K 
                Plans Weighted Average Assumptions used to                       
                Determine Benefit Obligations - Pension (Details)                
88: R139        Pension Plans and Other Post Employment Benefit     HTML     67K 
                Plans Weighted Average Assumptions used to                       
                Determine Net Periodic Benefit Cost - Pension                    
                (Details)                                                        
40: R140        Pension Plans and Other Post Employment Benefit     HTML     59K 
                Plans Weighted Average Assumptions used to                       
                Determine Benefit Obligations and Periodic Benefit               
                Cost - OPEB (Details)                                            
63: R141        Pension Plans and Other Post Employment Benefit     HTML     61K 
                Plans Assumed Health Care Cost Trend Rates                       
                (Details)                                                        
185: R142        Pension Plans and Other Post Employment Benefit     HTML    153K  
                Plans Change in Projected Benefit Obligations,                   
                Plan Assets and Funded Status (Details)                          
115: R143        Pension Plans and Other Post Employment Benefit     HTML    109K  
                Plans Amounts Recognized in Consolidated Balance                 
                Sheets (Details)                                                 
41: R144        Pension Plans and Other Post Employment Benefit     HTML     62K 
                Plans Pension Plans with Projected Benefit                       
                Obligations in Excess of Plan Assets (Details)                   
64: R145        Pension Plans and Other Post Employment Benefit     HTML     64K 
                Plans Pension Plans with Accumulated Benefit                     
                Obligations in Excess of Plan Assets (Details)                   
186: R146        Pension Plans and Other Post Employment Benefit     HTML    130K  
                Plans Components of net periodic benefit cost                    
                (Credit) and Amounts Recognized in Other                         
                Comprehensive Loss (Details)                                     
116: R147        Pension Plans and Other Post Employment Benefit     HTML     73K  
                Plans Estimated Future Benefit Payments (Details)                
43: R148        Pension Plans and Other Post Employment Benefit     HTML     71K 
                Plans Target Allocation for Plan Assets (Details)                
62: R149        Pension Plans and Other Post Employment Benefit     HTML    186K 
                Plans Basis of Fair Value Measurement (Details)                  
100: R150        Pension Plans and Other Post Employment Benefit     HTML    130K  
                Plans Summary of Fair Value Measurement of Level 3               
                Pension Plan Assets (Details)                                    
33: R151        Stock-Based Compensation Stock Compensation         HTML     81K 
                (Details)                                                        
152: R152        Stock-Based Compensation Weighted Average           HTML     65K  
                Assumptions - Stock Options (Details)                            
178: R153        Stock-Based Compensation Stock Options (Details)    HTML    163K  
99: R154        Stock-Based Compensation Restricted Stock Units     HTML    179K 
                and Performance Deferred Stock (Details)                         
32: R155        Financial Instruments Financial Instruments         HTML     58K 
                (Narrative) (Details)                                            
151: R156        Financial Instruments Notional Amounts (Details)    HTML     61K  
177: R157        Financial Instruments Cash Flow Hedges Included in  HTML     71K  
                AOCI (Details)                                                   
102: R158        Financial Instruments Fair Value of Derivatives     HTML     81K  
                (Details)                                                        
30: R159        Financial Instruments Effect of Derivative          HTML     82K 
                Instruments (Details)                                            
112: R160        Fair Value Measurements Fair Value Measurement      HTML     77K  
                Recurring Basis (Details)                                        
182: R161        Fair Value Measurements Fair Value Measurement      HTML     83K  
                Nonrecurring Basis (Details)                                     
68: R162        Geographic Information Revenue by Country           HTML     83K 
                (Details)                                                        
46: R163        Geographic Information Net Property by Country      HTML     68K 
                (Details)                                                        
111: R164        Segment Reporting Segment Information (Details)     HTML    106K  
181: R165        Segment Reporting Segment Reconciliation (Details)  HTML    142K  
67: R166        Segment Reporting Segment Assets (Details)          HTML     63K 
45: R167        Segment Reporting Other Items (Details)             HTML     67K 
108: R168        Segment Reporting Sig Items (Details)               HTML    182K  
184: R169        Quaterly Financial Data Quarterly Financial Data    HTML    106K  
                (Details)                                                        
172: R170        Quaterly Financial Data Quarterly Financial Data    HTML    112K  
                (Parentheticals) (Details)                                       
146: R171        Quaterly Financial Data Quarterly Financial Data    HTML    115K  
                Restatement (Details)                                            
37: R172        Subsequent Events (Details)                         HTML     59K 
104: R173        EID Basis of Presentation (Details)                 HTML     57K  
173: R174        EID Related Party (Details)                         HTML     66K  
147: R175        EID Income Taxes Geographic Allocation (Details)    HTML    108K  
38: R176        EID Income Taxes Rate Reconciliation (Details)      HTML    154K 
105: R177        EID Segment FN Segment Reconciliation (Details)     HTML    172K  
170: R178        EID Quarterly FN (Details)                          HTML     77K  
149: R179        EID Quarterly FN Reconciliations (Details)          HTML    101K  
109: XML         IDEA XML File -- Filing Summary                      XML    384K  
42: XML         XBRL Instance -- ctva-12x31x201910xk_htm             XML  11.47M 
89: EXCEL       IDEA Workbook of Financial Reports                  XLSX    310K 
12: EX-101.CAL  XBRL Calculations -- dd-20191231_cal                 XML    299K 
13: EX-101.DEF  XBRL Definitions -- dd-20191231_def                  XML   2.96M 
14: EX-101.LAB  XBRL Labels -- dd-20191231_lab                       XML   3.90M 
15: EX-101.PRE  XBRL Presentations -- dd-20191231_pre                XML   3.28M 
11: EX-101.SCH  XBRL Schema -- dd-20191231                           XSD    477K 
114: JSON        XBRL Instance as JSON Data -- MetaLinks              819±  1.29M  
52: ZIP         XBRL Zipped Folder -- 0001755672-20-000006-xbrl      Zip   1.14M 


‘EX-101.DEF’   —   XBRL Definitions — dd-20191231_def


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<link:roleRef roleURI="http://www.dupont.com/role/AccountsAndNotesReceivableNet" xlink:href="dd-20191231.xsd#AccountsAndNotesReceivableNet" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/AccountsAndNotesReceivableNetCustomerFinancingDetails" xlink:href="dd-20191231.xsd#AccountsAndNotesReceivableNetCustomerFinancingDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/AccountsAndNotesReceivableNetScheduleOfAccountsAndNotesReceivableNetDetails" xlink:href="dd-20191231.xsd#AccountsAndNotesReceivableNetScheduleOfAccountsAndNotesReceivableNetDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/AccountsAndNotesReceivableNetTables" xlink:href="dd-20191231.xsd#AccountsAndNotesReceivableNetTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BackgroundAndBasisOfPresentationDetails" xlink:href="dd-20191231.xsd#BackgroundAndBasisOfPresentationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BackgroundAndBasisOfPresentationNotes" xlink:href="dd-20191231.xsd#BackgroundAndBasisOfPresentationNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BackgroundAndBasisOfPresentationPolicies" xlink:href="dd-20191231.xsd#BackgroundAndBasisOfPresentationPolicies" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BusinessCombinations" xlink:href="dd-20191231.xsd#BusinessCombinations" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BusinessCombinationsDasCommonControlTransferBalanceSheetDetails" xlink:href="dd-20191231.xsd#BusinessCombinationsDasCommonControlTransferBalanceSheetDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BusinessCombinationsDasCommonControlTransferIncomeStatementDetails" xlink:href="dd-20191231.xsd#BusinessCombinationsDasCommonControlTransferIncomeStatementDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/BusinessCombinationsTables" xlink:href="dd-20191231.xsd#BusinessCombinationsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilities" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilities" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesEnvironmentalDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesEnvironmentalDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesGuaranteeNarrativeDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesGuaranteeNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationChemoursDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesLitigationChemoursDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationDupontDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesLitigationDupontDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationFayettevilleDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesLitigationFayettevilleDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationLeachAndMdlSettlementDetails" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesLitigationLeachAndMdlSettlementDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesTables" xlink:href="dd-20191231.xsd#CommitmentsAndContingentLiabilitiesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedBalanceSheets" xlink:href="dd-20191231.xsd#ConsolidatedBalanceSheets" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:href="dd-20191231.xsd#ConsolidatedBalanceSheetsParentheticals" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="dd-20191231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:href="dd-20191231.xsd#ConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedStatementsOfEquity" xlink:href="dd-20191231.xsd#ConsolidatedStatementsOfEquity" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedStatementsOfEquityParentheticals" xlink:href="dd-20191231.xsd#ConsolidatedStatementsOfEquityParentheticals" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ConsolidatedStatementsOfIncome" xlink:href="dd-20191231.xsd#ConsolidatedStatementsOfIncome" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DeiDocument" xlink:href="dd-20191231.xsd#DeiDocument" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactions" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactions" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessDepreciationAndCapitalExpendituresDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessDepreciationAndCapitalExpendituresDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessResultsOfOperationsDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessResultsOfOperationsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsNarrativeDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsPchemResultsOfOperationsDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsPchemResultsOfOperationsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsEcpDivestitureDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsEcpDivestitureDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsSpDivestitureDetails" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsSpDivestitureDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/DivestituresAndOtherTransactionsTables" xlink:href="dd-20191231.xsd#DivestituresAndOtherTransactionsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockEpsCalculationBasicDetails" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockEpsCalculationBasicDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockEpsCalculationDilutedDetails" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockEpsCalculationDilutedDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockNetIncomeForEpsCalcBasicAndDilutedDetails" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockNetIncomeForEpsCalcBasicAndDilutedDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockNotes" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockScheduleOfEarningsPerShareBasicAndDilutedTables" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockScheduleOfEarningsPerShareBasicAndDilutedTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockShareCountInformationDetails" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockShareCountInformationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EarningsPerShareOfCommonStockTables" xlink:href="dd-20191231.xsd#EarningsPerShareOfCommonStockTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidBasisOfPresentationDetails" xlink:href="dd-20191231.xsd#EidBasisOfPresentationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidBasisOfPresentationNotes" xlink:href="dd-20191231.xsd#EidBasisOfPresentationNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidIncomeTaxesGeographicAllocationDetails" xlink:href="dd-20191231.xsd#EidIncomeTaxesGeographicAllocationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidIncomeTaxesNotes" xlink:href="dd-20191231.xsd#EidIncomeTaxesNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidIncomeTaxesRateReconciliationDetails" xlink:href="dd-20191231.xsd#EidIncomeTaxesRateReconciliationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidIncomeTaxesTables" xlink:href="dd-20191231.xsd#EidIncomeTaxesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidQuarterlyFnDetails" xlink:href="dd-20191231.xsd#EidQuarterlyFnDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidQuarterlyFnNotes" xlink:href="dd-20191231.xsd#EidQuarterlyFnNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidQuarterlyFnReconciliationsDetails" xlink:href="dd-20191231.xsd#EidQuarterlyFnReconciliationsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidQuarterlyFnTables" xlink:href="dd-20191231.xsd#EidQuarterlyFnTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidRelatedPartyDetails" xlink:href="dd-20191231.xsd#EidRelatedPartyDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidRelatedPartyNotes" xlink:href="dd-20191231.xsd#EidRelatedPartyNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidRelatedPartyTables" xlink:href="dd-20191231.xsd#EidRelatedPartyTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidSegmentFnNotes" xlink:href="dd-20191231.xsd#EidSegmentFnNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidSegmentFnSegmentReconciliationDetails" xlink:href="dd-20191231.xsd#EidSegmentFnSegmentReconciliationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/EidSegmentFnTables" xlink:href="dd-20191231.xsd#EidSegmentFnTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FairValueMeasurements" xlink:href="dd-20191231.xsd#FairValueMeasurements" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FairValueMeasurementsFairValueMeasurementNonrecurringBasisDetails" xlink:href="dd-20191231.xsd#FairValueMeasurementsFairValueMeasurementNonrecurringBasisDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FairValueMeasurementsFairValueMeasurementRecurringBasisDetails" xlink:href="dd-20191231.xsd#FairValueMeasurementsFairValueMeasurementRecurringBasisDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FairValueMeasurementsTables" xlink:href="dd-20191231.xsd#FairValueMeasurementsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstruments" xlink:href="dd-20191231.xsd#FinancialInstruments" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsCashFlowHedgesIncludedInAociDetails" xlink:href="dd-20191231.xsd#FinancialInstrumentsCashFlowHedgesIncludedInAociDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsEffectOfDerivativeInstrumentsDetails" xlink:href="dd-20191231.xsd#FinancialInstrumentsEffectOfDerivativeInstrumentsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsFairValueOfDerivativesDetails" xlink:href="dd-20191231.xsd#FinancialInstrumentsFairValueOfDerivativesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsFinancialInstrumentsNarrativeDetails" xlink:href="dd-20191231.xsd#FinancialInstrumentsFinancialInstrumentsNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsNotionalAmountsDetails" xlink:href="dd-20191231.xsd#FinancialInstrumentsNotionalAmountsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/FinancialInstrumentsTables" xlink:href="dd-20191231.xsd#FinancialInstrumentsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GeographicInformation" xlink:href="dd-20191231.xsd#GeographicInformation" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GeographicInformationNetPropertyByCountryDetails" xlink:href="dd-20191231.xsd#GeographicInformationNetPropertyByCountryDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GeographicInformationRevenueByCountryDetails" xlink:href="dd-20191231.xsd#GeographicInformationRevenueByCountryDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GeographicInformationTables" xlink:href="dd-20191231.xsd#GeographicInformationTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssets" xlink:href="dd-20191231.xsd#GoodwillAndOtherIntangibleAssets" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsAmortizationExpenseDetails" xlink:href="dd-20191231.xsd#GoodwillAndOtherIntangibleAssetsAmortizationExpenseDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsGoodwillBySegmentDetails" xlink:href="dd-20191231.xsd#GoodwillAndOtherIntangibleAssetsGoodwillBySegmentDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails" xlink:href="dd-20191231.xsd#GoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsTables" xlink:href="dd-20191231.xsd#GoodwillAndOtherIntangibleAssetsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxes" xlink:href="dd-20191231.xsd#IncomeTaxes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesDeferredTaxBalancesDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesDeferredTaxBalancesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesGeographicAllocationOfIncomeAndProvisionForIncomeTaxesDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesGeographicAllocationOfIncomeAndProvisionForIncomeTaxesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesGrossUnrecognizedTaxBenefitsDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesGrossUnrecognizedTaxBenefitsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesNarrativeDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesOperatingLossAndTaxCreditCarryforwardsDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesOperatingLossAndTaxCreditCarryforwardsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesIncomeTaxesReconciliationToUsStatutoryRateDetails" xlink:href="dd-20191231.xsd#IncomeTaxesIncomeTaxesReconciliationToUsStatutoryRateDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/IncomeTaxesTables" xlink:href="dd-20191231.xsd#IncomeTaxesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/Inventories" xlink:href="dd-20191231.xsd#Inventories" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/InventoriesNarrativeDetails" xlink:href="dd-20191231.xsd#InventoriesNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/InventoriesScheduleOfInventoryDetails" xlink:href="dd-20191231.xsd#InventoriesScheduleOfInventoryDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/InventoriesTables" xlink:href="dd-20191231.xsd#InventoriesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesFutureMinimumLeaseCommitmentsDetails" xlink:href="dd-20191231.xsd#LeasesFutureMinimumLeaseCommitmentsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesLeaseCostsDetails" xlink:href="dd-20191231.xsd#LeasesLeaseCostsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesLeaseTermAndDiscountRateDetails" xlink:href="dd-20191231.xsd#LeasesLeaseTermAndDiscountRateDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesMaturityOfLeaseLiabilitiesDetails" xlink:href="dd-20191231.xsd#LeasesMaturityOfLeaseLiabilitiesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesNarrativeDetails" xlink:href="dd-20191231.xsd#LeasesNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesNotes" xlink:href="dd-20191231.xsd#LeasesNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:href="dd-20191231.xsd#LeasesSupplementalBalanceSheetInformationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesSupplementalCashFlowInformationDetails" xlink:href="dd-20191231.xsd#LeasesSupplementalCashFlowInformationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/LeasesTables" xlink:href="dd-20191231.xsd#LeasesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlans" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlans" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAdditionalInformationDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansAdditionalInformationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAssumedHealthCareCostTrendRatesDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansAssumedHealthCareCostTrendRatesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansBasisOfFairValueMeasurementDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansBasisOfFairValueMeasurementDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansChangeInProjectedBenefitObligationsPlanAssetsAndFundedStatusDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansChangeInProjectedBenefitObligationsPlanAssetsAndFundedStatusDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansComponentsOfNetPeriodicBenefitCostCreditAndAmountsRecognizedInOtherComprehensiveLossDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansComponentsOfNetPeriodicBenefitCostCreditAndAmountsRecognizedInOtherComprehensiveLossDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansEstimatedFutureBenefitPaymentsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansEstimatedFutureBenefitPaymentsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithProjectedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithProjectedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansSummaryOfFairValueMeasurementOfLevel3PensionPlanAssetsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansSummaryOfFairValueMeasurementOfLevel3PensionPlanAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansTables" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansTargetAllocationForPlanAssetsDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansTargetAllocationForPlanAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsAndPeriodicBenefitCostOpebDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsAndPeriodicBenefitCostOpebDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsPensionDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsPensionDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostPensionDetails" xlink:href="dd-20191231.xsd#PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostPensionDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PropertyPlantAndEquipment" xlink:href="dd-20191231.xsd#PropertyPlantAndEquipment" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PropertyPlantAndEquipmentScheduleOfDepreciationDetails" xlink:href="dd-20191231.xsd#PropertyPlantAndEquipmentScheduleOfDepreciationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails" xlink:href="dd-20191231.xsd#PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/PropertyPlantAndEquipmentTables" xlink:href="dd-20191231.xsd#PropertyPlantAndEquipmentTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/QuaterlyFinancialData" xlink:href="dd-20191231.xsd#QuaterlyFinancialData" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataDetails" xlink:href="dd-20191231.xsd#QuaterlyFinancialDataQuarterlyFinancialDataDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataParentheticalsDetails" xlink:href="dd-20191231.xsd#QuaterlyFinancialDataQuarterlyFinancialDataParentheticalsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataRestatementDetails" xlink:href="dd-20191231.xsd#QuaterlyFinancialDataQuarterlyFinancialDataRestatementDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/QuaterlyFinancialDataTables" xlink:href="dd-20191231.xsd#QuaterlyFinancialDataTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RecentAccountingGuidance" xlink:href="dd-20191231.xsd#RecentAccountingGuidance" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RecentAccountingGuidanceAccountingPronouncementsTables" xlink:href="dd-20191231.xsd#RecentAccountingGuidanceAccountingPronouncementsTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RecentAccountingGuidanceLeaseAsuEffectOnBalanceSheetDetails" xlink:href="dd-20191231.xsd#RecentAccountingGuidanceLeaseAsuEffectOnBalanceSheetDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RecentAccountingGuidanceRecentAccountingGuidancePolicies" xlink:href="dd-20191231.xsd#RecentAccountingGuidanceRecentAccountingGuidancePolicies" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RelatedPartiesNotes" xlink:href="dd-20191231.xsd#RelatedPartiesNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RelatedPartiesServicesProvidedByAndToDowDetails" xlink:href="dd-20191231.xsd#RelatedPartiesServicesProvidedByAndToDowDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RelatedPartiesTransactionsWithDowdupontDetails" xlink:href="dd-20191231.xsd#RelatedPartiesTransactionsWithDowdupontDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RestructuringAndAssetRelatedCharges" xlink:href="dd-20191231.xsd#RestructuringAndAssetRelatedCharges" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesAssetImpairmentsDetails" xlink:href="dd-20191231.xsd#RestructuringAndAssetRelatedChargesAssetImpairmentsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesDowdupontAgricultureDivisionRestructuringProgramDetails" xlink:href="dd-20191231.xsd#RestructuringAndAssetRelatedChargesDowdupontAgricultureDivisionRestructuringProgramDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesDowdupontCostSynergyProgramDetails" xlink:href="dd-20191231.xsd#RestructuringAndAssetRelatedChargesDowdupontCostSynergyProgramDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesTables" xlink:href="dd-20191231.xsd#RestructuringAndAssetRelatedChargesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueContractBalancesDetails" xlink:href="dd-20191231.xsd#RevenueContractBalancesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueDisaggregationOfRevenueGeoDetails" xlink:href="dd-20191231.xsd#RevenueDisaggregationOfRevenueGeoDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueDisaggregationOfRevenueProductsDetails" xlink:href="dd-20191231.xsd#RevenueDisaggregationOfRevenueProductsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueNarrativeDetails" xlink:href="dd-20191231.xsd#RevenueNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueNotes" xlink:href="dd-20191231.xsd#RevenueNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/RevenueTables" xlink:href="dd-20191231.xsd#RevenueTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ScheduleIiValuationAndQualifyingAccountsDetails" xlink:href="dd-20191231.xsd#ScheduleIiValuationAndQualifyingAccountsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ScheduleIiValuationAndQualifyingAccountsNotes" xlink:href="dd-20191231.xsd#ScheduleIiValuationAndQualifyingAccountsNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingNotes" xlink:href="dd-20191231.xsd#SegmentReportingNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingOtherItemsDetails" xlink:href="dd-20191231.xsd#SegmentReportingOtherItemsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingSegmentAssetsDetails" xlink:href="dd-20191231.xsd#SegmentReportingSegmentAssetsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingSegmentInformationDetails" xlink:href="dd-20191231.xsd#SegmentReportingSegmentInformationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingSegmentReconciliationDetails" xlink:href="dd-20191231.xsd#SegmentReportingSegmentReconciliationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingSigItemsDetails" xlink:href="dd-20191231.xsd#SegmentReportingSigItemsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SegmentReportingTables" xlink:href="dd-20191231.xsd#SegmentReportingTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilities" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilities" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesAvailableCommittedCreditFacilitiesNarrativeDetails" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesAvailableCommittedCreditFacilitiesNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesDebtRedemptionsRepaymentsDetails" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesDebtRedemptionsRepaymentsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesLongTermDebtDetails" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesLongTermDebtDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesShortTermBorrowingsAndCapitalLeaseObligationsDetails" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesShortTermBorrowingsAndCapitalLeaseObligationsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesTables" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesUncommittedCreditFacilitiesAndOutstandingLettersOfCreditDetails" xlink:href="dd-20191231.xsd#ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesUncommittedCreditFacilitiesAndOutstandingLettersOfCreditDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensation" xlink:href="dd-20191231.xsd#StockBasedCompensation" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensationRestrictedStockUnitsAndPerformanceDeferredStockDetails" xlink:href="dd-20191231.xsd#StockBasedCompensationRestrictedStockUnitsAndPerformanceDeferredStockDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensationStockCompensationDetails" xlink:href="dd-20191231.xsd#StockBasedCompensationStockCompensationDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensationStockOptionsDetails" xlink:href="dd-20191231.xsd#StockBasedCompensationStockOptionsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensationTables" xlink:href="dd-20191231.xsd#StockBasedCompensationTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockBasedCompensationWeightedAverageAssumptionsStockOptionsDetails" xlink:href="dd-20191231.xsd#StockBasedCompensationWeightedAverageAssumptionsStockOptionsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquity" xlink:href="dd-20191231.xsd#StockholdersEquity" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityCommonStockDetails" xlink:href="dd-20191231.xsd#StockholdersEquityCommonStockDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityNoncontrollingInterestDetails" xlink:href="dd-20191231.xsd#StockholdersEquityNoncontrollingInterestDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityOtherComprehensiveIncomeLossDetails" xlink:href="dd-20191231.xsd#StockholdersEquityOtherComprehensiveIncomeLossDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityReclassificationsOutOfAociDetails" xlink:href="dd-20191231.xsd#StockholdersEquityReclassificationsOutOfAociDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityTables" xlink:href="dd-20191231.xsd#StockholdersEquityTables" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/StockholdersEquityTaxBenefitExpenseOnNetActivityDetails" xlink:href="dd-20191231.xsd#StockholdersEquityTaxBenefitExpenseOnNetActivityDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SubsequentEventsDetails" xlink:href="dd-20191231.xsd#SubsequentEventsDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SubsequentEventsNotes" xlink:href="dd-20191231.xsd#SubsequentEventsNotes" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="dd-20191231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:href="dd-20191231.xsd#SummaryOfSignificantAccountingPoliciesDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="dd-20191231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformation" xlink:href="dd-20191231.xsd#SupplementaryInformation" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformationForeignCurrencyExchangeGainLossDetails" xlink:href="dd-20191231.xsd#SupplementaryInformationForeignCurrencyExchangeGainLossDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformationOtherIncomeExpenseNetDetails" xlink:href="dd-20191231.xsd#SupplementaryInformationOtherIncomeExpenseNetDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformationReconciliationOfCashCashEquivalentsAndRestrictedCashDetails" xlink:href="dd-20191231.xsd#SupplementaryInformationReconciliationOfCashCashEquivalentsAndRestrictedCashDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformationSupplementaryInformationNarrativeDetails" xlink:href="dd-20191231.xsd#SupplementaryInformationSupplementaryInformationNarrativeDetails" xlink:type="simple"/>
<link:roleRef roleURI="http://www.dupont.com/role/SupplementaryInformationTables" xlink:href="dd-20191231.xsd#SupplementaryInformationTables" xlink:type="simple"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/AccountsAndNotesReceivableNet" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/AccountsAndNotesReceivableNetCustomerFinancingDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3655794C8A44DF041FDD30725FC9632F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_4F711D018C640201855030725FBA2A25" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3655794C8A44DF041FDD30725FC9632F" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_4F711D018C640201855030725FBA2A25" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsAxis" xlink:label="loc_us-gaap_OtherCommitmentsAxis_7DDE4643B9E964C3617E30725FC76244" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_4F711D018C640201855030725FBA2A25" xlink:to="loc_us-gaap_OtherCommitmentsAxis_7DDE4643B9E964C3617E30725FC76244" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsDomain" xlink:label="loc_us-gaap_OtherCommitmentsDomain_026EFF89BCA459EF2BEC30725FC73EEB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_7DDE4643B9E964C3617E30725FC76244" xlink:to="loc_us-gaap_OtherCommitmentsDomain_026EFF89BCA459EF2BEC30725FC73EEB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsDomain" xlink:label="loc_us-gaap_OtherCommitmentsDomain_026EFF89BCA459EF2BEC30725FC73EEB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_7DDE4643B9E964C3617E30725FC76244" xlink:to="loc_us-gaap_OtherCommitmentsDomain_026EFF89BCA459EF2BEC30725FC73EEB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FactoringAgreementMember" xlink:label="loc_dd_FactoringAgreementMember_EA9815FF736F4AA6D29630725FC7BC31" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_026EFF89BCA459EF2BEC30725FC73EEB" xlink:to="loc_dd_FactoringAgreementMember_EA9815FF736F4AA6D29630725FC7BC31" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TradeReceivablesSold" xlink:label="loc_dd_TradeReceivablesSold_0F7044B0756DC070D29A30725FC950E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3655794C8A44DF041FDD30725FC9632F" xlink:to="loc_dd_TradeReceivablesSold_0F7044B0756DC070D29A30725FC950E4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeReceivablesHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale" xlink:label="loc_us-gaap_TradeReceivablesHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale_5224E452DEEC3ACE19A530725FC9E3D8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3655794C8A44DF041FDD30725FC9632F" xlink:to="loc_us-gaap_TradeReceivablesHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale_5224E452DEEC3ACE19A530725FC9E3D8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSaleOfAccountsReceivable" xlink:label="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_D6F1DFD87F40429F4E3430725FCF9F32" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3655794C8A44DF041FDD30725FC9632F" xlink:to="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_D6F1DFD87F40429F4E3430725FCF9F32" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/AccountsAndNotesReceivableNetScheduleOfAccountsAndNotesReceivableNetDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/AccountsAndNotesReceivableNetTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/BackgroundAndBasisOfPresentationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_32560888A578BBA1A849307269E02CE7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_us-gaap_StatementTable_32560888A578BBA1A849307269E02CE7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockByUniqueDescriptionAxis" xlink:label="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_DF70878BD16804C12FFE307269E19F93" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_32560888A578BBA1A849307269E02CE7" xlink:to="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_DF70878BD16804C12FFE307269E19F93" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockNameDomain" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_DF70878BD16804C12FFE307269E19F93" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockNameDomain" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_DF70878BD16804C12FFE307269E19F93" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharesofDowDuPontCommonStockHeldMember" xlink:label="loc_dd_SharesofDowDuPontCommonStockHeldMember_8178DC28EB6DFF29A9A2307269E157A7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402" xlink:to="loc_dd_SharesofDowDuPontCommonStockHeldMember_8178DC28EB6DFF29A9A2307269E157A7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharesofCortevaStockMember" xlink:label="loc_dd_SharesofCortevaStockMember_0C0D44FC2FEFB6F7A66E307269E1699B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockNameDomain_563D8089CE81FABAA8F2307269E10402" xlink:to="loc_dd_SharesofCortevaStockMember_0C0D44FC2FEFB6F7A66E307269E1699B" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_E4FC948AF0C01FACD40C307269E2ECC6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_32560888A578BBA1A849307269E02CE7" xlink:to="loc_dei_LegalEntityAxis_E4FC948AF0C01FACD40C307269E2ECC6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_E4FC948AF0C01FACD40C307269E2ECC6" xlink:to="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_E4FC948AF0C01FACD40C307269E2ECC6" xlink:to="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_C7FBE0D97CE7FD6D6D2C307269E23057" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:to="loc_dd_EIDMember_C7FBE0D97CE7FD6D6D2C307269E23057" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASMember" xlink:label="loc_dd_DASMember_ECE10D2BED3EBF531627307269E329E1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:to="loc_dd_DASMember_ECE10D2BED3EBF531627307269E329E1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowMember" xlink:label="loc_dd_DowMember_0D3FF33F331ED70EA01D307269E30A63" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:to="loc_dd_DowMember_0D3FF33F331ED70EA01D307269E30A63" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_963EB01E285E2B165708307269E3A407" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9729C8AFD93F4CE083BA307269E21CBF" xlink:to="loc_dd_CortevaMember_963EB01E285E2B165708307269E3A407" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_E4CA9514C2C92DFC4399307269E3F2D1" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_32560888A578BBA1A849307269E02CE7" xlink:to="loc_dd_CompanyAxis_E4CA9514C2C92DFC4399307269E3F2D1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_E4CA9514C2C92DFC4399307269E3F2D1" xlink:to="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_E4CA9514C2C92DFC4399307269E3F2D1" xlink:to="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_5F8602F2B4561DB4DB34307269E8390E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1" xlink:to="loc_dd_EIDMember_5F8602F2B4561DB4DB34307269E8390E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_BA0E2929C762D6CF016C307269E81AE9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_CA361FAE7DC9A25574B5307269E7ECE1" xlink:to="loc_dd_CortevaMember_BA0E2929C762D6CF016C307269E81AE9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_CA5478CFC022B578B6B2307269E87C5A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_us-gaap_NumberOfReportableSegments_CA5478CFC022B578B6B2307269E87C5A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_19C7BAAD8B7610101D23307269E93D95" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_19C7BAAD8B7610101D23307269E93D95" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExchangeRatio" xlink:label="loc_dd_ExchangeRatio_2CB6EFB4D4CC733E15F8307269E975FC" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_dd_ExchangeRatio_2CB6EFB4D4CC733E15F8307269E975FC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_2A9B546243FF717F87E3307269E9CCA9" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_2A9B546243FF717F87E3307269E9CCA9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Ownershipinterestinanentity" xlink:label="loc_dd_Ownershipinterestinanentity_3FEFB9874DB4C0FDAF44307269E9608A" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_dd_Ownershipinterestinanentity_3FEFB9874DB4C0FDAF44307269E9608A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_YearsofExperience" xlink:label="loc_dd_YearsofExperience_F07DD66D0E49B2C5FAE0307269E911E7" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_dd_YearsofExperience_F07DD66D0E49B2C5FAE0307269E911E7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfCountriesInWhichEntityOperates" xlink:label="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_1486F9FDECF30968973E307269EACD7C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C26EE95FFA79DE7FD057307269E8DDCE" xlink:to="loc_us-gaap_NumberOfCountriesInWhichEntityOperates_1486F9FDECF30968973E307269EACD7C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/BackgroundAndBasisOfPresentationNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/BackgroundAndBasisOfPresentationPolicies" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_D14D7A4915AD6DBDD1022042B7274A15" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_D14D7A4915AD6DBDD1022042B7274A15" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_371954BF0F77F7A127572042B7287F46" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_D14D7A4915AD6DBDD1022042B7274A15" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_371954BF0F77F7A127572042B7287F46" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_371954BF0F77F7A127572042B7287F46" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_371954BF0F77F7A127572042B7287F46" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ECPDisposalMember" xlink:label="loc_dd_ECPDisposalMember_19C5B67DF10FB313E21A2042B7291AA1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087" xlink:to="loc_dd_ECPDisposalMember_19C5B67DF10FB313E21A2042B7291AA1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SpecialtyProductsDisposalMember" xlink:label="loc_dd_SpecialtyProductsDisposalMember_8A98ADA0A040E52A395A2042B72AFA0D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087" xlink:to="loc_dd_SpecialtyProductsDisposalMember_8A98ADA0A040E52A395A2042B72AFA0D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivestedAgBusinessMember" xlink:label="loc_dd_DivestedAgBusinessMember_7CB84ACA788B5E10655C2042B72B5608" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_DF1FBB108396C487F8692042B728F087" xlink:to="loc_dd_DivestedAgBusinessMember_7CB84ACA788B5E10655C2042B72B5608" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IntendedBusinessSeparationsPolicyTextBlock" xlink:label="loc_dd_IntendedBusinessSeparationsPolicyTextBlock_7658F82396C313492E6E2042B72B4C05" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_dd_IntendedBusinessSeparationsPolicyTextBlock_7658F82396C313492E6E2042B72B4C05" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PurchaseTransactionPolicy" xlink:label="loc_us-gaap_PurchaseTransactionPolicy_45A67C8E1A930D0A25912042B72C4DB2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_us-gaap_PurchaseTransactionPolicy_45A67C8E1A930D0A25912042B72C4DB2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D70FA2A1CE24E72A574B206545BBEBAB" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_D70FA2A1CE24E72A574B206545BBEBAB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationsPolicyTextBlock" xlink:label="loc_us-gaap_DiscontinuedOperationsPolicyTextBlock_02F0D8DCF90A34C6603D2042B72CD585" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_us-gaap_DiscontinuedOperationsPolicyTextBlock_02F0D8DCF90A34C6603D2042B72CD585" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PushdownAccountingPolicyTextBlock" xlink:label="loc_us-gaap_PushdownAccountingPolicyTextBlock_6988AE8ACD30D411C5EA2042B72C7F0A" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0BDE99EB62D8A6A89F5F2042B72B9934" xlink:to="loc_us-gaap_PushdownAccountingPolicyTextBlock_6988AE8ACD30D411C5EA2042B72C7F0A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/BusinessCombinations" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/BusinessCombinationsDasCommonControlTransferBalanceSheetDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_E7A7CC0D3706280D7D4E205DF0FE0BED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_E7A7CC0D3706280D7D4E205DF0FE0BED" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransactionTypeAxis" xlink:label="loc_us-gaap_TransactionTypeAxis_0DB11BF161F90E43602A205DF0FEDF8C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_E7A7CC0D3706280D7D4E205DF0FE0BED" xlink:to="loc_us-gaap_TransactionTypeAxis_0DB11BF161F90E43602A205DF0FEDF8C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransactionDomain" xlink:label="loc_us-gaap_TransactionDomain_6C46F063C6C7FDC23024205DF0FEB7A3_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TransactionTypeAxis_0DB11BF161F90E43602A205DF0FEDF8C" xlink:to="loc_us-gaap_TransactionDomain_6C46F063C6C7FDC23024205DF0FEB7A3_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransactionDomain" xlink:label="loc_us-gaap_TransactionDomain_6C46F063C6C7FDC23024205DF0FEB7A3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TransactionTypeAxis_0DB11BF161F90E43602A205DF0FEDF8C" xlink:to="loc_us-gaap_TransactionDomain_6C46F063C6C7FDC23024205DF0FEB7A3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASCommonControlTransferMember" xlink:label="loc_dd_DASCommonControlTransferMember_B97CCD11906993D7BB73205DF0FF77A0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransactionDomain_6C46F063C6C7FDC23024205DF0FEB7A3" xlink:to="loc_dd_DASCommonControlTransferMember_B97CCD11906993D7BB73205DF0FF77A0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_AA918B1C73F1E9A0EA9D205DF0FF7BC1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_AA918B1C73F1E9A0EA9D205DF0FF7BC1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_72FDFCFDAEA749780268205DF0FFE17F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_ReceivablesNetCurrent_72FDFCFDAEA749780268205DF0FFE17F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_1E45F54C6A10A858AB6E205DF1003841" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_InventoryNet_1E45F54C6A10A858AB6E205DF1003841" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_8A2FC7C95D3677E1D4A5205DF1002F5B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_OtherAssetsCurrent_8A2FC7C95D3677E1D4A5205DF1002F5B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_1A7B3D8CA393BC9BE6D5205DF10077A3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_1A7B3D8CA393BC9BE6D5205DF10077A3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_C7F7567C27D39892CA72205DF1002522" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_C7F7567C27D39892CA72205DF1002522" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_02D6F300DC64A5D90157205DF100D73E" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_Goodwill_02D6F300DC64A5D90157205DF100D73E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_05E9C98F6B36916265FE205DF101108F" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_05E9C98F6B36916265FE205DF101108F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsDeferredIncome" xlink:label="loc_us-gaap_DeferredTaxAssetsDeferredIncome_F5071FC01FA29345D3C8205DF1010ECC" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_DeferredTaxAssetsDeferredIncome_F5071FC01FA29345D3C8205DF1010ECC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_7F099266F49BD99EBBD9205DF101F31A" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_7F099266F49BD99EBBD9205DF101F31A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_BA65CC16C6772ADD4DE9205DF101F52F" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_ShortTermBorrowings_BA65CC16C6772ADD4DE9205DF101F52F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_8B401364AC9A06D57689205DF1014DBB" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_AccountsPayableCurrent_8B401364AC9A06D57689205DF1014DBB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedIncomeTaxes" xlink:label="loc_us-gaap_AccruedIncomeTaxes_510D429BB7A2754B8D3A205DF101879C" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_AccruedIncomeTaxes_510D429BB7A2754B8D3A205DF101879C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_73DFABD2B36104BDF4D2205DF101806C" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_73DFABD2B36104BDF4D2205DF101806C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_BAAE7D9C41C88D34C0CB205DF10261DE" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_LongTermDebt_BAAE7D9C41C88D34C0CB205DF10261DE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_3587723B570A8BFCC623205DF102EF52" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_3587723B570A8BFCC623205DF102EF52" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_408C572F4E24DFC97D5F205DF102FF20" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_408C572F4E24DFC97D5F205DF102FF20" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_259CE735D66F28CBF77E205DF102849D" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_BE36FCF8F3C829812F7A205DF0FF9C55" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_259CE735D66F28CBF77E205DF102849D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/BusinessCombinationsDasCommonControlTransferIncomeStatementDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_E0205D88726E2C4B59B13095EE997466" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8F3E29597BF2E1A74F523095EE968803" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_E0205D88726E2C4B59B13095EE997466" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8F3E29597BF2E1A74F523095EE968803" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationAxis" xlink:label="loc_dd_CommoncontrolcombinationAxis_3941BA841941F046E6DD3095EE97C9DB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8F3E29597BF2E1A74F523095EE968803" xlink:to="loc_dd_CommoncontrolcombinationAxis_3941BA841941F046E6DD3095EE97C9DB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CommoncontrolcombinationAxis_3941BA841941F046E6DD3095EE97C9DB" xlink:to="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CommoncontrolcombinationAxis_3941BA841941F046E6DD3095EE97C9DB" xlink:to="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HistoricalEIDMember" xlink:label="loc_dd_HistoricalEIDMember_E8DDAD42ADF9DEC45B983095EE98687B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519" xlink:to="loc_dd_HistoricalEIDMember_E8DDAD42ADF9DEC45B983095EE98687B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DiscontinuedOperationsandOtherAdjustmentsMember" xlink:label="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_FFD8CCAB59F71A9C2AA23095EE98146A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519" xlink:to="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_FFD8CCAB59F71A9C2AA23095EE98146A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASMember" xlink:label="loc_dd_DASMember_9CE851BE5598348C911C3095EE985867" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_B1E020131413E70B367F3095EE98C519" xlink:to="loc_dd_DASMember_9CE851BE5598348C911C3095EE985867" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6EEA6AA01063ED43ADB93095EE9907ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_E0205D88726E2C4B59B13095EE997466" xlink:to="loc_us-gaap_Revenues_6EEA6AA01063ED43ADB93095EE9907ED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2115D74D5B2A76633A513095EE993188" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_E0205D88726E2C4B59B13095EE997466" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2115D74D5B2A76633A513095EE993188" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_049CBD5E66768328D22D3095EE9A7667" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_E0205D88726E2C4B59B13095EE997466" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_049CBD5E66768328D22D3095EE9A7667" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/BusinessCombinationsTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_0005E697EAA728C62A6D205DF110B84E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4A6F503C26CEE51A0E38205DF10F4072" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0005E697EAA728C62A6D205DF110B84E" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4A6F503C26CEE51A0E38205DF10F4072" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureAxis" xlink:label="loc_dd_TypeofDisclosureAxis_0E7A768A2D1FFF1A848220BE8F962547" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_4A6F503C26CEE51A0E38205DF10F4072" xlink:to="loc_dd_TypeofDisclosureAxis_0E7A768A2D1FFF1A848220BE8F962547" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureDomain" xlink:label="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_TypeofDisclosureAxis_0E7A768A2D1FFF1A848220BE8F962547" xlink:to="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureDomain" xlink:label="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_TypeofDisclosureAxis_0E7A768A2D1FFF1A848220BE8F962547" xlink:to="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BalanceSheetMember" xlink:label="loc_dd_BalanceSheetMember_9554E7AF2AC157E3FB2020C0C0A00AE1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82" xlink:to="loc_dd_BalanceSheetMember_9554E7AF2AC157E3FB2020C0C0A00AE1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IncomeStatementMember" xlink:label="loc_dd_IncomeStatementMember_8632533135B91EEDC78020BE8FC5EDD8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_TypeofDisclosureDomain_F006824DD50570B91EB820BE8F970A82" xlink:to="loc_dd_IncomeStatementMember_8632533135B91EEDC78020BE8FC5EDD8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommonControlCombinationTableTextBlock" xlink:label="loc_dd_CommonControlCombinationTableTextBlock_442B7C78C50FFD567E6820BE8F6D3508" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0005E697EAA728C62A6D205DF110B84E" xlink:to="loc_dd_CommonControlCombinationTableTextBlock_442B7C78C50FFD567E6820BE8F6D3508" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilities" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesEnvironmentalDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:to="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_C0F4FCAAD05D6D26B638208618BC1390" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:to="loc_dei_LegalEntityAxis_C0F4FCAAD05D6D26B638208618BC1390" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_3D4CEA6E92196100D38E208618CE36CC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_C0F4FCAAD05D6D26B638208618BC1390" xlink:to="loc_dd_DuPontDomain_3D4CEA6E92196100D38E208618CE36CC_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_3D4CEA6E92196100D38E208618CE36CC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_C0F4FCAAD05D6D26B638208618BC1390" xlink:to="loc_dd_DuPontDomain_3D4CEA6E92196100D38E208618CE36CC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontdeNemoursMember" xlink:label="loc_dd_DuPontdeNemoursMember_6A09D6A8D41E728ABE4C20861942E6B0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_3D4CEA6E92196100D38E208618CE36CC" xlink:to="loc_dd_DuPontdeNemoursMember_6A09D6A8D41E728ABE4C20861942E6B0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EnvironmentalRemediationStrayLiabilitiesAxis" xlink:label="loc_dd_EnvironmentalRemediationStrayLiabilitiesAxis_2AFF4135F61C1AAD36ED2051F615F154" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:to="loc_dd_EnvironmentalRemediationStrayLiabilitiesAxis_2AFF4135F61C1AAD36ED2051F615F154" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EnvironmentalRemediationStrayLiabilitiesDomain" xlink:label="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesAxis_2AFF4135F61C1AAD36ED2051F615F154" xlink:to="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EnvironmentalRemediationStrayLiabilitiesDomain" xlink:label="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesAxis_2AFF4135F61C1AAD36ED2051F615F154" xlink:to="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChemoursrelatedobligationsubjecttoindemnificationMember" xlink:label="loc_dd_ChemoursrelatedobligationsubjecttoindemnificationMember_A304EA1410168ECDA9FB2051F616F9F5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:to="loc_dd_ChemoursrelatedobligationsubjecttoindemnificationMember_A304EA1410168ECDA9FB2051F616F9F5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_643D2CF6D0420DE919762051F617F96B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_643D2CF6D0420DE919762051F617F96B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EnvironmentalremediationliabilitiesprimarilyrelatedtoDuPontsubjecttoindemnityfromDuPontMember" xlink:label="loc_dd_EnvironmentalremediationliabilitiesprimarilyrelatedtoDuPontsubjecttoindemnityfromDuPontMember_25F725B8C4736BB700C42051F61799BE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:to="loc_dd_EnvironmentalremediationliabilitiesprimarilyrelatedtoDuPontsubjecttoindemnityfromDuPontMember_25F725B8C4736BB700C42051F61799BE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_NotsubjecttoindemnificationMember" xlink:label="loc_dd_NotsubjecttoindemnificationMember_E9B4935D68D3EB9153272051F6186649" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_EnvironmentalRemediationStrayLiabilitiesDomain_4B0EB6868FC1325E1F082051F6166B9A" xlink:to="loc_dd_NotsubjecttoindemnificationMember_E9B4935D68D3EB9153272051F6186649" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_EFC1AF0C15B0BCB04CC72051F618CEA9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_EFC1AF0C15B0BCB04CC72051F618CEA9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_D9656F28A7E72588C7592051F618B92E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_EFC1AF0C15B0BCB04CC72051F618CEA9" xlink:to="loc_us-gaap_LossContingencyNatureDomain_D9656F28A7E72588C7592051F618B92E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_D9656F28A7E72588C7592051F618B92E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_EFC1AF0C15B0BCB04CC72051F618CEA9" xlink:to="loc_us-gaap_LossContingencyNatureDomain_D9656F28A7E72588C7592051F618B92E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndemnificationGuaranteeMember" xlink:label="loc_us-gaap_IndemnificationGuaranteeMember_0E2421F4FE8992BDDD642051F61830E2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_D9656F28A7E72588C7592051F618B92E" xlink:to="loc_us-gaap_IndemnificationGuaranteeMember_0E2421F4FE8992BDDD642051F61830E2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_6A07C8F96CFA333BFDB02051F619C1AB" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:to="loc_srt_CounterpartyNameAxis_6A07C8F96CFA333BFDB02051F619C1AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_6A07C8F96CFA333BFDB02051F619C1AB" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_6A07C8F96CFA333BFDB02051F619C1AB" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChemoursMember" xlink:label="loc_dd_ChemoursMember_026239110C64FA41B4B52051F6193534" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573" xlink:to="loc_dd_ChemoursMember_026239110C64FA41B4B52051F6193534" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontdeNemoursMember" xlink:label="loc_dd_DuPontdeNemoursMember_053A70FA6E4335D6B96A2051F61A08E3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9CE03DB7F2738E33D4CE2051F619C573" xlink:to="loc_dd_DuPontdeNemoursMember_053A70FA6E4335D6B96A2051F61A08E3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnvironmentalRemediationSiteAxis" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_B7C7DA337255C87787582051F61AC63A" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AE9E7971220ED9A3D2EF2051F6154D7E" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteAxis_B7C7DA337255C87787582051F61AC63A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnvironmentalRemediationSiteDomain" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_71D05D79FAE1A25189472051F61A39F3_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_B7C7DA337255C87787582051F61AC63A" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_71D05D79FAE1A25189472051F61A39F3_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnvironmentalRemediationSiteDomain" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_71D05D79FAE1A25189472051F61A39F3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_B7C7DA337255C87787582051F61AC63A" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_71D05D79FAE1A25189472051F61A39F3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuperfundSitesMember" xlink:label="loc_dd_SuperfundSitesMember_99A8560DF97AFEC8AFFD2051F61BEE0F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_71D05D79FAE1A25189472051F61A39F3" xlink:to="loc_dd_SuperfundSitesMember_99A8560DF97AFEC8AFFD2051F61BEE0F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnificationAssets" xlink:label="loc_dd_IndemnificationAssets_92B2841D50CE4BA311D62051F61BF4DA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:to="loc_dd_IndemnificationAssets_92B2841D50CE4BA311D62051F61BF4DA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_8E3277DA5B6ECDB818A52051F61C4CBF" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingencies_8E3277DA5B6ECDB818A52051F61C4CBF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccrualforEnvironmentalLossContingenciesPotentialExposureinExcessofAccrual" xlink:label="loc_dd_AccrualforEnvironmentalLossContingenciesPotentialExposureinExcessofAccrual_A9A0B7D044D1164E25892051F61C6E5D" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:to="loc_dd_AccrualforEnvironmentalLossContingenciesPotentialExposureinExcessofAccrual_A9A0B7D044D1164E25892051F61C6E5D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Strayliabilitythreshold" xlink:label="loc_dd_Strayliabilitythreshold_88764431B04FC831EBB22051F61C853A" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_705B5D5B229CB69CC8B52051F61B49BE" xlink:to="loc_dd_Strayliabilitythreshold_88764431B04FC831EBB22051F61C853A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesGuaranteeNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_CFD08D35B867EE12ED01F8823DD4A629" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_453B9AECEB48F15C51E4F8823DD2DF60" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_CFD08D35B867EE12ED01F8823DD4A629" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_453B9AECEB48F15C51E4F8823DD2DF60" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GuaranteePaymentTimingAxis" xlink:label="loc_dd_GuaranteePaymentTimingAxis_7E8FCE924AC47C8C6C55F8823DD28A3F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_453B9AECEB48F15C51E4F8823DD2DF60" xlink:to="loc_dd_GuaranteePaymentTimingAxis_7E8FCE924AC47C8C6C55F8823DD28A3F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PaymentTimingDomain" xlink:label="loc_dd_PaymentTimingDomain_6D7BBB40C2B2CCC238DAF8823DD32DF1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_GuaranteePaymentTimingAxis_7E8FCE924AC47C8C6C55F8823DD28A3F" xlink:to="loc_dd_PaymentTimingDomain_6D7BBB40C2B2CCC238DAF8823DD32DF1_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PaymentTimingDomain" xlink:label="loc_dd_PaymentTimingDomain_6D7BBB40C2B2CCC238DAF8823DD32DF1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_GuaranteePaymentTimingAxis_7E8FCE924AC47C8C6C55F8823DD28A3F" xlink:to="loc_dd_PaymentTimingDomain_6D7BBB40C2B2CCC238DAF8823DD32DF1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CurrentPortionMember" xlink:label="loc_dd_CurrentPortionMember_1CFED443EBF84CBF711DF8823DD33E5A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_PaymentTimingDomain_6D7BBB40C2B2CCC238DAF8823DD32DF1" xlink:to="loc_dd_CurrentPortionMember_1CFED443EBF84CBF711DF8823DD33E5A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_3209F534002B0699FBAFF8823DD30CC9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_453B9AECEB48F15C51E4F8823DD2DF60" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_3209F534002B0699FBAFF8823DD30CC9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_91A9DE7A141778AA573AF8823DD38374_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_3209F534002B0699FBAFF8823DD30CC9" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_91A9DE7A141778AA573AF8823DD38374_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_91A9DE7A141778AA573AF8823DD38374" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_3209F534002B0699FBAFF8823DD30CC9" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_91A9DE7A141778AA573AF8823DD38374" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FactoringAgreementMember" xlink:label="loc_dd_FactoringAgreementMember_1483CB51FC2C6E35C696F8823DD45A73" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_91A9DE7A141778AA573AF8823DD38374" xlink:to="loc_dd_FactoringAgreementMember_1483CB51FC2C6E35C696F8823DD45A73" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_2EC0E72074DCF88DA312F8823DD62E61" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_CFD08D35B867EE12ED01F8823DD4A629" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_2EC0E72074DCF88DA312F8823DD62E61" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_E3B4DFC5A7B7E1EA4166F8823DD6BA9C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_CFD08D35B867EE12ED01F8823DD4A629" xlink:to="loc_us-gaap_AccountsReceivableNet_E3B4DFC5A7B7E1EA4166F8823DD6BA9C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationChemoursDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_195B7A3364CFAAF17AD82051F4FDDA46" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:to="loc_us-gaap_LossContingenciesTable_195B7A3364CFAAF17AD82051F4FDDA46" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_01598EF9B7934C6ABB712051F4FDB65F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_195B7A3364CFAAF17AD82051F4FDDA46" xlink:to="loc_dei_LegalEntityAxis_01598EF9B7934C6ABB712051F4FDB65F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_57E92B5C6443A85DCEB42051F4FD10DF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01598EF9B7934C6ABB712051F4FDB65F" xlink:to="loc_dd_DuPontDomain_57E92B5C6443A85DCEB42051F4FD10DF_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_57E92B5C6443A85DCEB42051F4FD10DF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01598EF9B7934C6ABB712051F4FDB65F" xlink:to="loc_dd_DuPontDomain_57E92B5C6443A85DCEB42051F4FD10DF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChemoursMember" xlink:label="loc_dd_ChemoursMember_DAA0C26B1FEE3E58161F2051F4FEEA66" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_57E92B5C6443A85DCEB42051F4FD10DF" xlink:to="loc_dd_ChemoursMember_DAA0C26B1FEE3E58161F2051F4FEEA66" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_49759B29F2497A883CE12051F4FE7D93" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_195B7A3364CFAAF17AD82051F4FDDA46" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_49759B29F2497A883CE12051F4FE7D93" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_1DA5F6782347AA2CC63F2051F4FFD404_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_49759B29F2497A883CE12051F4FE7D93" xlink:to="loc_us-gaap_LossContingencyNatureDomain_1DA5F6782347AA2CC63F2051F4FFD404_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_1DA5F6782347AA2CC63F2051F4FFD404" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_49759B29F2497A883CE12051F4FE7D93" xlink:to="loc_us-gaap_LossContingencyNatureDomain_1DA5F6782347AA2CC63F2051F4FFD404" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFOAMattersMultiDistrictLitigationMember" xlink:label="loc_dd_PFOAMattersMultiDistrictLitigationMember_344E480C08B69BB8E52C2051F4FF3B4D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_1DA5F6782347AA2CC63F2051F4FFD404" xlink:to="loc_dd_PFOAMattersMultiDistrictLitigationMember_344E480C08B69BB8E52C2051F4FF3B4D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_1AA7407B0F9214C5DFF22051F4FFDFD7" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_195B7A3364CFAAF17AD82051F4FDDA46" xlink:to="loc_srt_CounterpartyNameAxis_1AA7407B0F9214C5DFF22051F4FFDFD7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_5B62AF5B38AD5C83FE722051F4FFED6A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_1AA7407B0F9214C5DFF22051F4FFDFD7" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_5B62AF5B38AD5C83FE722051F4FFED6A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_5B62AF5B38AD5C83FE722051F4FFED6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_1AA7407B0F9214C5DFF22051F4FFDFD7" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_5B62AF5B38AD5C83FE722051F4FFED6A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChemoursMember" xlink:label="loc_dd_ChemoursMember_1AEB201FFF776C9DB52A2051F5006C63" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_5B62AF5B38AD5C83FE722051F4FFED6A" xlink:to="loc_dd_ChemoursMember_1AEB201FFF776C9DB52A2051F5006C63" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LossContingencyLimitedSharingofPotentialFutureLiabilitiesPeriod" xlink:label="loc_dd_LossContingencyLimitedSharingofPotentialFutureLiabilitiesPeriod_8DA1C012B4EAD1D6CB822051F50170E0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:to="loc_dd_LossContingencyLimitedSharingofPotentialFutureLiabilitiesPeriod_8DA1C012B4EAD1D6CB822051F50170E0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyChemours" xlink:label="loc_dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyChemours_78492BF7C36FBDBB421D2051F5024AE3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:to="loc_dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyChemours_78492BF7C36FBDBB421D2051F5024AE3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyCorteva" xlink:label="loc_dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyCorteva_DA9CEBE698BF4D0FB9A32051F5021122" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:to="loc_dd_AdditionalannualPFOAliabilitiesforthenextfiveyearspaidbyCorteva_DA9CEBE698BF4D0FB9A32051F5021122" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDividendsReceived" xlink:label="loc_us-gaap_ProceedsFromDividendsReceived_417D8D898A696DDE73762051F5029526" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_520151837289D0B1EE702051F5019545" xlink:to="loc_us-gaap_ProceedsFromDividendsReceived_417D8D898A696DDE73762051F5029526" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationDupontDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_26E5DF65C3F7585CCC3D2051F559B4B5" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_26E5DF65C3F7585CCC3D2051F559B4B5" xlink:to="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_E5399EDAD11D430B3E1D2051F5543D31" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:to="loc_dei_LegalEntityAxis_E5399EDAD11D430B3E1D2051F5543D31" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_E5399EDAD11D430B3E1D2051F5543D31" xlink:to="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_E5399EDAD11D430B3E1D2051F5543D31" xlink:to="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_0A47C02AB2920E718BE12051F555146D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F" xlink:to="loc_dd_CortevaMember_0A47C02AB2920E718BE12051F555146D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontdeNemoursMember" xlink:label="loc_dd_DuPontdeNemoursMember_09752022DA10B03BC82E2051F555DCDC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9C2CE1E06F933C1DEA772051F5548F1F" xlink:to="loc_dd_DuPontdeNemoursMember_09752022DA10B03BC82E2051F555DCDC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_192F81969030B60048992051F5557D32" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:to="loc_srt_CounterpartyNameAxis_192F81969030B60048992051F5557D32" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8E69589820FCA3ACDD912051F55595AD_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_192F81969030B60048992051F5557D32" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8E69589820FCA3ACDD912051F55595AD_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8E69589820FCA3ACDD912051F55595AD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_192F81969030B60048992051F5557D32" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8E69589820FCA3ACDD912051F55595AD" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontdeNemoursMember" xlink:label="loc_dd_DuPontdeNemoursMember_129A3638F86E7D27B2872051F5564223" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8E69589820FCA3ACDD912051F55595AD" xlink:to="loc_dd_DuPontdeNemoursMember_129A3638F86E7D27B2872051F5564223" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_9A1F37750723590440F42051F55662F4" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:to="loc_srt_LitigationCaseAxis_9A1F37750723590440F42051F55662F4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_E3FD612E2D6287EF9FE32051F5563E55_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_9A1F37750723590440F42051F55662F4" xlink:to="loc_srt_LitigationCaseTypeDomain_E3FD612E2D6287EF9FE32051F5563E55_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_E3FD612E2D6287EF9FE32051F5563E55" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_9A1F37750723590440F42051F55662F4" xlink:to="loc_srt_LitigationCaseTypeDomain_E3FD612E2D6287EF9FE32051F5563E55" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFASMember" xlink:label="loc_dd_PFASMember_A1C162CE246B5E59A4262051F557732B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_E3FD612E2D6287EF9FE32051F5563E55" xlink:to="loc_dd_PFASMember_A1C162CE246B5E59A4262051F557732B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_E0381D3902BF18884EAD2051F5573399" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:to="loc_srt_RangeAxis_E0381D3902BF18884EAD2051F5573399" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_E0381D3902BF18884EAD2051F5573399" xlink:to="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_E0381D3902BF18884EAD2051F5573399" xlink:to="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_592FD59B1BA65F583C2C2051F5584945" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229" xlink:to="loc_srt_MinimumMember_592FD59B1BA65F583C2C2051F5584945" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_89AA8FE724464E450A102051F55728FE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_0E454AD9741D6FFDFAAA2051F5576229" xlink:to="loc_srt_MaximumMember_89AA8FE724464E450A102051F55728FE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_CE6E06FE6E29AE4885FC2051F55874CE" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B36D95A0BC8612839C272051F554BCE4" xlink:to="loc_srt_StatementScenarioAxis_CE6E06FE6E29AE4885FC2051F55874CE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_AB628E594EF9417286B32051F558C3D6_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_CE6E06FE6E29AE4885FC2051F55874CE" xlink:to="loc_srt_ScenarioUnspecifiedDomain_AB628E594EF9417286B32051F558C3D6_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_AB628E594EF9417286B32051F558C3D6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_CE6E06FE6E29AE4885FC2051F55874CE" xlink:to="loc_srt_ScenarioUnspecifiedDomain_AB628E594EF9417286B32051F558C3D6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Once300millionthresholdismetMember" xlink:label="loc_dd_Once300millionthresholdismetMember_F7D8EF99480FF746ABF72051F5582EC9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_AB628E594EF9417286B32051F558C3D6" xlink:to="loc_dd_Once300millionthresholdismetMember_F7D8EF99480FF746ABF72051F5582EC9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Strayliabilitythreshold" xlink:label="loc_dd_Strayliabilitythreshold_E71EE5703E87B197D8762051F5596589" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_26E5DF65C3F7585CCC3D2051F559B4B5" xlink:to="loc_dd_Strayliabilitythreshold_E71EE5703E87B197D8762051F5596589" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Strayliabilitysharingpercentage" xlink:label="loc_dd_Strayliabilitysharingpercentage_4DC44D16E3E6E548A12A2051F559C115" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_26E5DF65C3F7585CCC3D2051F559B4B5" xlink:to="loc_dd_Strayliabilitysharingpercentage_4DC44D16E3E6E548A12A2051F559C115" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Amountcreditedtoeachcompanysthreshold" xlink:label="loc_dd_Amountcreditedtoeachcompanysthreshold_E6E91C5E757DE7B442FE2051F559EBB2" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_26E5DF65C3F7585CCC3D2051F559B4B5" xlink:to="loc_dd_Amountcreditedtoeachcompanysthreshold_E6E91C5E757DE7B442FE2051F559EBB2" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationFayettevilleDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_1A54D346D0822D30DE9BF8823DA66137" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_AFFE3BFAA04CE2E934CEF8823DA41C48" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_1A54D346D0822D30DE9BF8823DA66137" xlink:to="loc_us-gaap_LossContingenciesTable_AFFE3BFAA04CE2E934CEF8823DA41C48" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_DD1D50CB468E41EA882DF8823DA59B3D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AFFE3BFAA04CE2E934CEF8823DA41C48" xlink:to="loc_srt_StatementGeographicalAxis_DD1D50CB468E41EA882DF8823DA59B3D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_67FAD4ED46B586243D9CF8823DA5C0D6_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_DD1D50CB468E41EA882DF8823DA59B3D" xlink:to="loc_srt_SegmentGeographicalDomain_67FAD4ED46B586243D9CF8823DA5C0D6_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_67FAD4ED46B586243D9CF8823DA5C0D6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_DD1D50CB468E41EA882DF8823DA59B3D" xlink:to="loc_srt_SegmentGeographicalDomain_67FAD4ED46B586243D9CF8823DA5C0D6" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NC" xlink:label="loc_stpr_NC_9226A5763821B7987F3EF8823DA5A1A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_67FAD4ED46B586243D9CF8823DA5C0D6" xlink:to="loc_stpr_NC_9226A5763821B7987F3EF8823DA5A1A8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_A521B09CD7690D644090F8823DA57A55" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_AFFE3BFAA04CE2E934CEF8823DA41C48" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_A521B09CD7690D644090F8823DA57A55" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_A8FF8891D78AA7D4951BF8823DA66AF7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_A521B09CD7690D644090F8823DA57A55" xlink:to="loc_us-gaap_LossContingencyNatureDomain_A8FF8891D78AA7D4951BF8823DA66AF7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_A8FF8891D78AA7D4951BF8823DA66AF7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_A521B09CD7690D644090F8823DA57A55" xlink:to="loc_us-gaap_LossContingencyNatureDomain_A8FF8891D78AA7D4951BF8823DA66AF7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFOAMattersDrinkingWaterActionsMember" xlink:label="loc_dd_PFOAMattersDrinkingWaterActionsMember_932C2F459BFC3ABBC4C2F8823DA6850A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_A8FF8891D78AA7D4951BF8823DA66AF7" xlink:to="loc_dd_PFOAMattersDrinkingWaterActionsMember_932C2F459BFC3ABBC4C2F8823DA6850A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyPendingClaimsNumber" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_BEA02B980A20BC32BCBCF8823DA6EE53" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_1A54D346D0822D30DE9BF8823DA66137" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_BEA02B980A20BC32BCBCF8823DA6EE53" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LossContingencyNumberofAdditionalPlaintiffs" xlink:label="loc_dd_LossContingencyNumberofAdditionalPlaintiffs_6CB5AF96CC846E1EBCBCF8823DA7F856" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_1A54D346D0822D30DE9BF8823DA66137" xlink:to="loc_dd_LossContingencyNumberofAdditionalPlaintiffs_6CB5AF96CC846E1EBCBCF8823DA7F856" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesLitigationLeachAndMdlSettlementDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_F110C9B54EAEA2170B8D2051F600889E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:to="loc_srt_CounterpartyNameAxis_F110C9B54EAEA2170B8D2051F600889E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9E19E118FBC3E5531BA62051F60039E9_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_F110C9B54EAEA2170B8D2051F600889E" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9E19E118FBC3E5531BA62051F60039E9_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9E19E118FBC3E5531BA62051F60039E9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_F110C9B54EAEA2170B8D2051F600889E" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9E19E118FBC3E5531BA62051F60039E9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChemoursMember" xlink:label="loc_dd_ChemoursMember_6C6A7AB8C493666098B92051F60143A6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9E19E118FBC3E5531BA62051F60039E9" xlink:to="loc_dd_ChemoursMember_6C6A7AB8C493666098B92051F60143A6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_DFB3EC1C4A48C5F3E2992051F601923C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:to="loc_srt_StatementGeographicalAxis_DFB3EC1C4A48C5F3E2992051F601923C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_DFB3EC1C4A48C5F3E2992051F601923C" xlink:to="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_DFB3EC1C4A48C5F3E2992051F601923C" xlink:to="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NY" xlink:label="loc_stpr_NY_7EDF271153EC9F3F63E92051F60282CC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:to="loc_stpr_NY_7EDF271153EC9F3F63E92051F60282CC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_WESTVIRGINIAANDOHIODomain" xlink:label="loc_dd_WESTVIRGINIAANDOHIODomain_FD7F4E09D795507C262E2051F602D607" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:to="loc_dd_WESTVIRGINIAANDOHIODomain_FD7F4E09D795507C262E2051F602D607" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NJ" xlink:label="loc_stpr_NJ_581CACCE7C422D5FBE8B2051F603597E" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:to="loc_stpr_NJ_581CACCE7C422D5FBE8B2051F603597E" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_OH" xlink:label="loc_stpr_OH_301D05DFD143329AEA972051F6030CEA" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_82DF15280CC65A892E1B2051F6014F00" xlink:to="loc_stpr_OH_301D05DFD143329AEA972051F6030CEA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_46660ECD7026DA32F8712051F6037061" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:to="loc_srt_LitigationCaseAxis_46660ECD7026DA32F8712051F6037061" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_46660ECD7026DA32F8712051F6037061" xlink:to="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_46660ECD7026DA32F8712051F6037061" xlink:to="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FraudulentConveyanceMember" xlink:label="loc_dd_FraudulentConveyanceMember_55E8B794165740C1DA462051F60458E1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44" xlink:to="loc_dd_FraudulentConveyanceMember_55E8B794165740C1DA462051F60458E1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PersonalinjurycasesMember" xlink:label="loc_dd_PersonalinjurycasesMember_29988DE74983E251E06D2056298461E4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_97977297927F4AABBFF32051F6036B44" xlink:to="loc_dd_PersonalinjurycasesMember_29988DE74983E251E06D2056298461E4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_7261494A667F872BCC4D2051F6044A7D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_B9A0CE4EEB31958E544B2051F600CD1D" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_7261494A667F872BCC4D2051F6044A7D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_7261494A667F872BCC4D2051F6044A7D" xlink:to="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_7261494A667F872BCC4D2051F6044A7D" xlink:to="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFOAMattersDrinkingWaterActionsMember" xlink:label="loc_dd_PFOAMattersDrinkingWaterActionsMember_C0144651232F8A4C9BF52051F604ED8B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:to="loc_dd_PFOAMattersDrinkingWaterActionsMember_C0144651232F8A4C9BF52051F604ED8B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FirefightingFoamMember" xlink:label="loc_dd_FirefightingFoamMember_9C1BC7EC1EE2F175F3F52051F605E028" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:to="loc_dd_FirefightingFoamMember_9C1BC7EC1EE2F175F3F52051F605E028" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_NaturalResourcesDamagesMember" xlink:label="loc_dd_NaturalResourcesDamagesMember_A58E3F8A2B536616645B2051F60521D7" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:to="loc_dd_NaturalResourcesDamagesMember_A58E3F8A2B536616645B2051F60521D7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFOAMattersMultiDistrictLitigationMember" xlink:label="loc_dd_PFOAMattersMultiDistrictLitigationMember_680058175C503D8AC0D62051F605405E" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:to="loc_dd_PFOAMattersMultiDistrictLitigationMember_680058175C503D8AC0D62051F605405E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PFOAMattersMember" xlink:label="loc_dd_PFOAMattersMember_4A4983522391776DA8A92051F60506F5" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_7CA92698C4FAA5336BA52051F604D808" xlink:to="loc_dd_PFOAMattersMember_4A4983522391776DA8A92051F60506F5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnifiedLiabilities" xlink:label="loc_dd_IndemnifiedLiabilities_24AE2817F17798809B172051F606F3D6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_IndemnifiedLiabilities_24AE2817F17798809B172051F606F3D6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnificationAssets" xlink:label="loc_dd_IndemnificationAssets_54FC6C1123B4833427EA2051F6065998" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_IndemnificationAssets_54FC6C1123B4833427EA2051F6065998" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BindingSettlementAgreementClassSize" xlink:label="loc_dd_BindingSettlementAgreementClassSize_F8CBD0E176B0A51D122D2051F606DE6F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_BindingSettlementAgreementClassSize_F8CBD0E176B0A51D122D2051F606DE6F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LossContingencyNumberOfWaterDistrictsReceivingWaterTreatment" xlink:label="loc_dd_LossContingencyNumberOfWaterDistrictsReceivingWaterTreatment_F2F38FEA675DC5BA31912051F60636E0" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_LossContingencyNumberOfWaterDistrictsReceivingWaterTreatment_F2F38FEA675DC5BA31912051F60636E0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LitigationSettlementLiabilityForMedicalMonitoringProgramThreshold" xlink:label="loc_dd_LitigationSettlementLiabilityForMedicalMonitoringProgramThreshold_444041E32CDEEA12CB792051F60629D3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_LitigationSettlementLiabilityForMedicalMonitoringProgramThreshold_444041E32CDEEA12CB792051F60629D3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LitigationSettlementMedicalMonitoringProgramEscrowAccountDisbursementsToDate" xlink:label="loc_dd_LitigationSettlementMedicalMonitoringProgramEscrowAccountDisbursementsToDate_F6BFFE016C4AA4DB35DD2051F607FE4A" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_LitigationSettlementMedicalMonitoringProgramEscrowAccountDisbursementsToDate_F6BFFE016C4AA4DB35DD2051F607FE4A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EscrowDeposit" xlink:label="loc_us-gaap_EscrowDeposit_DE84A693095E57B130842051F6078B79" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_us-gaap_EscrowDeposit_DE84A693095E57B130842051F6078B79" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DiseaseCategoriesforMDL" xlink:label="loc_dd_DiseaseCategoriesforMDL_E111873D1B218EAD6CBB2051F607695F" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_DiseaseCategoriesforMDL_E111873D1B218EAD6CBB2051F607695F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Lawsuitsallegingpersonalinjuryfiled" xlink:label="loc_dd_Lawsuitsallegingpersonalinjuryfiled_6735B142B3B3824E566B2051F6076901" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_dd_Lawsuitsallegingpersonalinjuryfiled_6735B142B3B3824E566B2051F6076901" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_C9CE932EB364221884E02051F607EBDE" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_C9CE932EB364221884E02051F607EBDE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyPendingClaimsNumber" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_815A7CB77B0BDE9CA7AB2051F6085336" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_E27F13CE76F7F882327A2051F60529CC" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_815A7CB77B0BDE9CA7AB2051F6085336" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/CommitmentsAndContingentLiabilitiesTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_E75AB98FF1CB31E340E616627EE72D18" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_StatementTable_E75AB98FF1CB31E340E616627EE72D18" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_47B5270267AFBD68150316A9BF20278B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_E75AB98FF1CB31E340E616627EE72D18" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_47B5270267AFBD68150316A9BF20278B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_F40AF903DEED98DEB98016A9BF2534CB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_47B5270267AFBD68150316A9BF20278B" xlink:to="loc_us-gaap_RelatedPartyDomain_F40AF903DEED98DEB98016A9BF2534CB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_F40AF903DEED98DEB98016A9BF2534CB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_47B5270267AFBD68150316A9BF20278B" xlink:to="loc_us-gaap_RelatedPartyDomain_F40AF903DEED98DEB98016A9BF2534CB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_0AE66A890B9E62B6BCD316A9C03F5AF5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_F40AF903DEED98DEB98016A9BF2534CB" xlink:to="loc_dd_CortevaMember_0AE66A890B9E62B6BCD316A9C03F5AF5" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_021B8B3BB787DA641CC916627EE7B891" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_E75AB98FF1CB31E340E616627EE72D18" xlink:to="loc_dei_LegalEntityAxis_021B8B3BB787DA641CC916627EE7B891" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_D8421D87D13D8339B5AE16627EE79F70_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_021B8B3BB787DA641CC916627EE7B891" xlink:to="loc_dd_DuPontDomain_D8421D87D13D8339B5AE16627EE79F70_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_D8421D87D13D8339B5AE16627EE79F70" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_021B8B3BB787DA641CC916627EE7B891" xlink:to="loc_dd_DuPontDomain_D8421D87D13D8339B5AE16627EE79F70" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_BA63E3516C8B9A44913416627EE89D5F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_D8421D87D13D8339B5AE16627EE79F70" xlink:to="loc_dd_EIDMember_BA63E3516C8B9A44913416627EE89D5F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_50E786FD2429230365C016627EE80108" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_E75AB98FF1CB31E340E616627EE72D18" xlink:to="loc_us-gaap_StatementClassOfStockAxis_50E786FD2429230365C016627EE80108" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_50E786FD2429230365C016627EE80108" xlink:to="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_50E786FD2429230365C016627EE80108" xlink:to="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.50SeriesPreferredStockMember" xlink:label="loc_dd_A4.50SeriesPreferredStockMember_BC3C85794869CA7D829016627EE96B54" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B" xlink:to="loc_dd_A4.50SeriesPreferredStockMember_BC3C85794869CA7D829016627EE96B54" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.50SeriesPreferredStockMember" xlink:label="loc_dd_A3.50SeriesPreferredStockMember_12C020A42A34F5B0F14216627EE95608" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_958F530236479A60056616627EE81B2B" xlink:to="loc_dd_A3.50SeriesPreferredStockMember_12C020A42A34F5B0F14216627EE95608" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_955BF9116C16A607943216627EE9D7FC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_955BF9116C16A607943216627EE9D7FC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="loc_us-gaap_ShortTermInvestments_97F42F1EAC9E93388E0016627EEA4844" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_ShortTermInvestments_97F42F1EAC9E93388E0016627EEA4844" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_914D999EBF0C76F267D816627EEABB31" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_ReceivablesNetCurrent_914D999EBF0C76F267D816627EEABB31" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_1570C157D3D2F7DC046C16627EEABB36" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_InventoryNet_1570C157D3D2F7DC046C16627EEABB36" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_3A3AF5AAB2BE9703B14D16627EEA8741" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_OtherAssetsCurrent_3A3AF5AAB2BE9703B14D16627EEA8741" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_250D584934C95CDDCE4A16627EEA6069" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_250D584934C95CDDCE4A16627EEA6069" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_D18DEB96ED629BE08F3E16627EEBB542" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AssetsCurrent_D18DEB96ED629BE08F3E16627EEBB542" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_BBE27BCB9E9EEB8D32D316627EEB3834" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_EquityMethodInvestments_BBE27BCB9E9EEB8D32D316627EEB3834" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_25D8D4960C546B1F294016627EEB3F4E" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_25D8D4960C546B1F294016627EEB3F4E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2F94E3199AF89E9348F616627EEB0470" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2F94E3199AF89E9348F616627EEB0470" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2B80AD6C3566EC8089B416627EEB184E" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_2B80AD6C3566EC8089B416627EEB184E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_902669164413166830DB16627EEBD921" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_Goodwill_902669164413166830DB16627EEBD921" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_E4CF4503B3B11047104816627EEC0BA5" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_E4CF4503B3B11047104816627EEC0BA5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_2EF961D42E6D2EF401B016627EECC081" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_2EF961D42E6D2EF401B016627EECC081" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_634C4E5741F485CA9D7F16627EEC8DF1" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_634C4E5741F485CA9D7F16627EEC8DF1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_C251DCF7D3BE624606D616627EEC5C23" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_C251DCF7D3BE624606D616627EEC5C23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_8A5FA1444AF9EF2F7DB216627EEC7F59" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_Assets_8A5FA1444AF9EF2F7DB216627EEC7F59" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_CE434878AF9DFCDA0EE816627EEDAA6A" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_DebtCurrent_CE434878AF9DFCDA0EE816627EEDAA6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_78E0698CE4547820B4B416627EEDEE7C" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AccountsPayableCurrent_78E0698CE4547820B4B416627EEDEE7C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_F4D99316D13D90A7289C16627EED1684" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_F4D99316D13D90A7289C16627EED1684" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_A22DE0A75724EE2D812C16627EED9705" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_A22DE0A75724EE2D812C16627EED9705" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_933F871769893681603B16627EEDAEFB" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_933F871769893681603B16627EEDAEFB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_FCA02F812A88ABB5553A16627EED83C5" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LiabilitiesCurrent_FCA02F812A88ABB5553A16627EED83C5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_458473995B372E80AA6716627EEED280" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_458473995B372E80AA6716627EEED280" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableRelatedPartiesNoncurrent" xlink:label="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_EA5B639AA462D40FA60516627EE9D9D1" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_EA5B639AA462D40FA60516627EE9D9D1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_38CFF2EC77A04BAD365D16627EEE2990" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_38CFF2EC77A04BAD365D16627EEE2990" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_60A0AB10FC190ADD8A1816627EEE0AE8" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_60A0AB10FC190ADD8A1816627EEE0AE8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_F4EE8B6E5188F054755216627EEEC0BE" xlink:type="locator"/>
<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_F4EE8B6E5188F054755216627EEEC0BE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_C348BC3CE78E4F0A323F16627EEDB361" xlink:type="locator"/>
<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_C348BC3CE78E4F0A323F16627EEDB361" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_E94ECA40FF2E72AC31FF16627EEE1A53" xlink:type="locator"/>
<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_E94ECA40FF2E72AC31FF16627EEE1A53" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_5F7DDDB40C16636A677F16627EEF908A" xlink:type="locator"/>
<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_PreferredStockValue_5F7DDDB40C16636A677F16627EEF908A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_B5F9C3A694919E4F34E916627EEFA7B4" xlink:type="locator"/>
<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_CommonStockValue_B5F9C3A694919E4F34E916627EEFA7B4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_4C6EC6EABB738C771C8E16627EEFAB70" xlink:type="locator"/>
<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AdditionalPaidInCapital_4C6EC6EABB738C771C8E16627EEFAB70" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivisionalEquity" xlink:label="loc_dd_DivisionalEquity_01A4F1BF40FD0281E4D016627EEF2AC7" xlink:type="locator"/>
<link:definitionArc order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_dd_DivisionalEquity_01A4F1BF40FD0281E4D016627EEF2AC7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_E1C8A324A75947CE837616627EEFBAEB" xlink:type="locator"/>
<link:definitionArc order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_E1C8A324A75947CE837616627EEFBAEB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CC99E39D70567FD8592416627EF08CB4" xlink:type="locator"/>
<link:definitionArc order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CC99E39D70567FD8592416627EF08CB4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_E034B1B7A8810B0A392E16627EF0C063" xlink:type="locator"/>
<link:definitionArc order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_StockholdersEquity_E034B1B7A8810B0A392E16627EF0C063" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_C8FFDF408B6722321D3316627EF0901B" xlink:type="locator"/>
<link:definitionArc order="38" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_MinorityInterest_C8FFDF408B6722321D3316627EF0901B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C3BCB7CDB8D361C6F5AA16627EF0664A" xlink:type="locator"/>
<link:definitionArc order="39" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C3BCB7CDB8D361C6F5AA16627EF0664A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_84B80F244F8D1FAC807E16627EF067D2" xlink:type="locator"/>
<link:definitionArc order="40" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C64CA4E8649BD75489BF16627EE98CA7" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_84B80F244F8D1FAC807E16627EF067D2" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_7A388CE869F56293C6A215BAC209C6B3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_StatementTable_7A388CE869F56293C6A215BAC209C6B3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_F96E9C2EB82B38641C0E15D14802A2DC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7A388CE869F56293C6A215BAC209C6B3" xlink:to="loc_dei_LegalEntityAxis_F96E9C2EB82B38641C0E15D14802A2DC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_8FB223BDE506DC1E934015D1480DD044_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_F96E9C2EB82B38641C0E15D14802A2DC" xlink:to="loc_dd_DuPontDomain_8FB223BDE506DC1E934015D1480DD044_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_8FB223BDE506DC1E934015D1480DD044" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_F96E9C2EB82B38641C0E15D14802A2DC" xlink:to="loc_dd_DuPontDomain_8FB223BDE506DC1E934015D1480DD044" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_5B164AC5925B0B7DDBF715D1490AF065" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_8FB223BDE506DC1E934015D1480DD044" xlink:to="loc_dd_EIDMember_5B164AC5925B0B7DDBF715D1490AF065" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_476D5874035D119DE7F315BAC209EA2F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_7A388CE869F56293C6A215BAC209C6B3" xlink:to="loc_us-gaap_StatementClassOfStockAxis_476D5874035D119DE7F315BAC209EA2F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_476D5874035D119DE7F315BAC209EA2F" xlink:to="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_476D5874035D119DE7F315BAC209EA2F" xlink:to="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.50SeriesPreferredStockMember" xlink:label="loc_dd_A4.50SeriesPreferredStockMember_7AE3EA40DB3BB7CBD0E615BAC209A1E9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE" xlink:to="loc_dd_A4.50SeriesPreferredStockMember_7AE3EA40DB3BB7CBD0E615BAC209A1E9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.50SeriesPreferredStockMember" xlink:label="loc_dd_A3.50SeriesPreferredStockMember_5DF7A1A0904785F0FBE615BAC20939F4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_68B2205AF613A0F3F36E15BAC2093ABE" xlink:to="loc_dd_A3.50SeriesPreferredStockMember_5DF7A1A0904785F0FBE615BAC20939F4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_17905DB2189274CD80F915BAC209FACB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_17905DB2189274CD80F915BAC209FACB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_033834C01054EA16814D15BAC209F5B9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_033834C01054EA16814D15BAC209F5B9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_D315F2A53692035D94B715BAC2094B9C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_D315F2A53692035D94B715BAC2094B9C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockNoParValue" xlink:label="loc_us-gaap_PreferredStockNoParValue_0644D0A1A25CA6227EC415BAC2090AB9" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_PreferredStockNoParValue_0644D0A1A25CA6227EC415BAC2090AB9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_15C3FBE01D38729F99B015BAC209B5E6" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_15C3FBE01D38729F99B015BAC209B5E6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_D2AEC62BC3F8B92C7AC315BAC209D9E0" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_PreferredStockSharesIssued_D2AEC62BC3F8B92C7AC315BAC209D9E0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockRedemptionAmount" xlink:label="loc_us-gaap_PreferredStockRedemptionAmount_8F99E4C7DE3FB1A39D2F15BAC2094967" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EFA104D6621E08B8D3A715BAC209C8F0" xlink:to="loc_us-gaap_PreferredStockRedemptionAmount_8F99E4C7DE3FB1A39D2F15BAC2094967" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_FC89599E5AEF450E87C11743B909AF6E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_StatementTable_FC89599E5AEF450E87C11743B909AF6E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_7AD3F2D9EB560E4C78221743B9143966" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_FC89599E5AEF450E87C11743B909AF6E" xlink:to="loc_srt_RestatementAxis_7AD3F2D9EB560E4C78221743B9143966" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_97FE73DBC95F2BE594271743B9151C72_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_7AD3F2D9EB560E4C78221743B9143966" xlink:to="loc_srt_RestatementDomain_97FE73DBC95F2BE594271743B9151C72_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_97FE73DBC95F2BE594271743B9151C72" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_7AD3F2D9EB560E4C78221743B9143966" xlink:to="loc_srt_RestatementDomain_97FE73DBC95F2BE594271743B9151C72" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_F48E8FE07BDE5C25AA891743B9152D87" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_97FE73DBC95F2BE594271743B9151C72" xlink:to="loc_dd_SuccessorPeriodMember_F48E8FE07BDE5C25AA891743B9152D87" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_265AE4A48E93017A80A91743B917376F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_FC89599E5AEF450E87C11743B909AF6E" xlink:to="loc_srt_ConsolidationItemsAxis_265AE4A48E93017A80A91743B917376F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_3E11088443533C9826BA1743B91730A6_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_265AE4A48E93017A80A91743B917376F" xlink:to="loc_srt_ConsolidationItemsDomain_3E11088443533C9826BA1743B91730A6_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_3E11088443533C9826BA1743B91730A6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_265AE4A48E93017A80A91743B917376F" xlink:to="loc_srt_ConsolidationItemsDomain_3E11088443533C9826BA1743B91730A6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TotalcompanyMember" xlink:label="loc_dd_TotalcompanyMember_58E147C83179C8149A5A1743B917E21D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3E11088443533C9826BA1743B91730A6" xlink:to="loc_dd_TotalcompanyMember_58E147C83179C8149A5A1743B917E21D" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_AE70370A0CB4278404B11743B9189E60" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_FC89599E5AEF450E87C11743B909AF6E" xlink:to="loc_dei_LegalEntityAxis_AE70370A0CB4278404B11743B9189E60" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_BDF2B00E2783D28136F11743B9186535_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_AE70370A0CB4278404B11743B9189E60" xlink:to="loc_dd_DuPontDomain_BDF2B00E2783D28136F11743B9186535_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_BDF2B00E2783D28136F11743B9186535" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_AE70370A0CB4278404B11743B9189E60" xlink:to="loc_dd_DuPontDomain_BDF2B00E2783D28136F11743B9186535" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_B916C8124F32A34579271743B9198B5F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_BDF2B00E2783D28136F11743B9186535" xlink:to="loc_dd_EIDMember_B916C8124F32A34579271743B9198B5F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_C6A715658281953B9C791743B919E641" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProfitLoss_C6A715658281953B9C791743B919E641" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_412F1911E2EBF9F6EB681743B91AAD2F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_412F1911E2EBF9F6EB681743B91AAD2F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeferredIncomeTaxExpenseBenefitContinuingOperationsandDiscontinuedOperations" xlink:label="loc_dd_DeferredIncomeTaxExpenseBenefitContinuingOperationsandDiscontinuedOperations_6C3CADF071B481C3417E1743B91AFB76" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_DeferredIncomeTaxExpenseBenefitContinuingOperationsandDiscontinuedOperations_6C3CADF071B481C3417E1743B91AFB76" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionExpenseReversalOfExpenseNoncash" xlink:label="loc_us-gaap_PensionExpenseReversalOfExpenseNoncash_1DFDE9CD5372539DE2A61743B91A89B6" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PensionExpenseReversalOfExpenseNoncash_1DFDE9CD5372539DE2A61743B91A89B6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionContributions" xlink:label="loc_us-gaap_PensionContributions_700E6A5616F8DAE9738D1743B91AA71D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PensionContributions_700E6A5616F8DAE9738D1743B91AA71D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Netgainonsalesofpropertybusinessesconsolidatedcompaniesandinvestments" xlink:label="loc_dd_Netgainonsalesofpropertybusinessesconsolidatedcompaniesandinvestments_FD244AD057DE395829721743B91B44D6" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_Netgainonsalesofpropertybusinessesconsolidatedcompaniesandinvestments_FD244AD057DE395829721743B91B44D6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_990E8F06814CD85F14A71743B91C6DB9" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_990E8F06814CD85F14A71743B91C6DB9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_EB7A67205C16F439884C1743B91C9188" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_EB7A67205C16F439884C1743B91C9188" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_4B8BC648CF953D4DE4E01743B91CEEE8" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_4B8BC648CF953D4DE4E01743B91CEEE8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Assetimpairmentsandassetrelatedcharges" xlink:label="loc_dd_Assetimpairmentsandassetrelatedcharges_FEED3BD7DD79F84862A81743B91C96B3" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_Assetimpairmentsandassetrelatedcharges_FEED3BD7DD79F84862A81743B91C96B3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationsInventoryFairValueAdjustment" xlink:label="loc_dd_BusinessCombinationsInventoryFairValueAdjustment_2C36969D3D4C3322FDEE1743B91DD527" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_BusinessCombinationsInventoryFairValueAdjustment_2C36969D3D4C3322FDEE1743B91DD527" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_11D4D9BB3B863597ED3C1743B91D5262" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_11D4D9BB3B863597ED3C1743B91D5262" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable_74AC55F7D782E6D92BCD1743B91D96DE" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable_74AC55F7D782E6D92BCD1743B91D96DE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_4836471F27776D75EAAC1743B91E1F0A" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_4836471F27776D75EAAC1743B91E1F0A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventoriesAndOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInInventoriesAndOtherOperatingAssets_5C9EC3BDB77DB93588561743B91E676B" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInInventoriesAndOtherOperatingAssets_5C9EC3BDB77DB93588561743B91E676B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_F49E3772765941FE5FBC1743B91EA0AB" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_F49E3772765941FE5FBC1743B91EA0AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_8D2C5C52FE039EE778F31743B91E3628" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_8D2C5C52FE039EE778F31743B91E3628" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_741BFAD906272C0966B01743B91E693C" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_741BFAD906272C0966B01743B91E693C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Increasedecreaseinaccruedinterestandincometaxes" xlink:label="loc_dd_Increasedecreaseinaccruedinterestandincometaxes_D8EA77938BAFBC31DE291743B91FC09E" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_Increasedecreaseinaccruedinterestandincometaxes_D8EA77938BAFBC31DE291743B91FC09E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_20B91EED91F7DFA2C30A1743B91F2AFE" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_20B91EED91F7DFA2C30A1743B91F2AFE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_ED8C288313765D2155A41743B9273A04" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_ED8C288313765D2155A41743B9273A04" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Proceedsfromthesaleofpropertybusinessesandconsolidatedcompaniesnetofcashdivested" xlink:label="loc_dd_Proceedsfromthesaleofpropertybusinessesandconsolidatedcompaniesnetofcashdivested_70D473A9D43F8A74910C1743B928EB91" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_Proceedsfromthesaleofpropertybusinessesandconsolidatedcompaniesnetofcashdivested_70D473A9D43F8A74910C1743B928EB91" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E1D6749BD8DC5F04085E1743B9285472" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_E1D6749BD8DC5F04085E1743B9285472" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_2FA37CA1032710AE26711743B928BCD0" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_2FA37CA1032710AE26711743B928BCD0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_3574E89DABD8DF818C38174F60F3D206" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_3574E89DABD8DF818C38174F60F3D206" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_F532166D4A04359111441743B929CB7F" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsToAcquireMarketableSecurities_F532166D4A04359111441743B929CB7F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_5EA5E5A4BA98E49BB2A71743B9293E92" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_5EA5E5A4BA98E49BB2A71743B9293E92" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities_EB19844A8462DCF0BF0C1743B92E5BE7" xlink:type="locator"/>
<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities_EB19844A8462DCF0BF0C1743B92E5BE7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_43D962028D8982AEDCC61743B92E3758" xlink:type="locator"/>
<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_43D962028D8982AEDCC61743B92E3758" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_9F055925BD9599AC22571743B92F9E57" xlink:type="locator"/>
<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_9F055925BD9599AC22571743B92F9E57" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_B03D60E1F50932B74C211743B92F5D42" xlink:type="locator"/>
<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_B03D60E1F50932B74C211743B92F5D42" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromRelatedPartyDebt" xlink:label="loc_us-gaap_ProceedsFromRelatedPartyDebt_DF1A9F264BA93527F4841743B92FDE44" xlink:type="locator"/>
<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromRelatedPartyDebt_DF1A9F264BA93527F4841743B92FDE44" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfRelatedPartyDebt" xlink:label="loc_us-gaap_RepaymentsOfRelatedPartyDebt_03E3ECB1B78E9461FD9D1743B9304EDC" xlink:type="locator"/>
<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_RepaymentsOfRelatedPartyDebt_03E3ECB1B78E9461FD9D1743B9304EDC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_84191096EC93F4BE11F01743B9309B84" xlink:type="locator"/>
<link:definitionArc order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_84191096EC93F4BE11F01743B9309B84" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_079787B9998010F5E2C41743B930952F" xlink:type="locator"/>
<link:definitionArc order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_079787B9998010F5E2C41743B930952F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_F9563DD098D4440ED1F01743B930ADB4" xlink:type="locator"/>
<link:definitionArc order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_F9563DD098D4440ED1F01743B930ADB4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_8C2309A2B225CA7A88901743B9310527" xlink:type="locator"/>
<link:definitionArc order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_8C2309A2B225CA7A88901743B9310527" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="loc_us-gaap_PaymentsOfDividends_AF89D6AC3B3CB67E043B1743B931D882" xlink:type="locator"/>
<link:definitionArc order="38" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsOfDividends_AF89D6AC3B3CB67E043B1743B931D882" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDistributionsToAffiliates" xlink:label="loc_us-gaap_PaymentsOfDistributionsToAffiliates_A488AD671BC1F17CD5D11743B9328F09" xlink:type="locator"/>
<link:definitionArc order="39" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsOfDistributionsToAffiliates_A488AD671BC1F17CD5D11743B9328F09" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromContributionsFromParent" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_B3EFE05E7B580487D66C1743B9329CBE" xlink:type="locator"/>
<link:definitionArc order="40" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromContributionsFromParent_B3EFE05E7B580487D66C1743B9329CBE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CashtransferredatInternalReorganization" xlink:label="loc_dd_CashtransferredatInternalReorganization_5A1CB9A466F6F8A37FD91749B35B677A" xlink:type="locator"/>
<link:definitionArc order="41" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_CashtransferredatInternalReorganization_5A1CB9A466F6F8A37FD91749B35B677A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts" xlink:label="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_50368FCAF0640CEC312A1743B932ABEE" xlink:type="locator"/>
<link:definitionArc order="42" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_50368FCAF0640CEC312A1743B932ABEE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_E0FBC16F0B2A4F237C021743B9334826" xlink:type="locator"/>
<link:definitionArc order="43" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_E0FBC16F0B2A4F237C021743B9334826" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_46E4D6C128EF2A95A60B1743B933A014" xlink:type="locator"/>
<link:definitionArc order="44" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_46E4D6C128EF2A95A60B1743B933A014" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6CAEDEC7AF62070453621743B9334C48" xlink:type="locator"/>
<link:definitionArc order="45" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6CAEDEC7AF62070453621743B9334C48" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationCashandCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationCashandCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_B1DE130946EC40AB8ACC1743B933617F" xlink:type="locator"/>
<link:definitionArc order="46" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationCashandCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_B1DE130946EC40AB8ACC1743B933617F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_0E92C7AE9957A7644B791743B934001B" xlink:type="locator"/>
<link:definitionArc order="47" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_0E92C7AE9957A7644B791743B934001B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_7D703E7C05ED52B65C7D1747407CCE3D" xlink:type="locator"/>
<link:definitionArc order="48" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_7D703E7C05ED52B65C7D1747407CCE3D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_73DD4658FDC1E8D586D71743B935489A" xlink:type="locator"/>
<link:definitionArc order="50" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_InterestPaidNet_73DD4658FDC1E8D586D71743B935489A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="loc_us-gaap_IncomeTaxesPaid_12A86DF64D0D18E14E271743B935E0B7" xlink:type="locator"/>
<link:definitionArc order="51" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23AC51C07475C28244021743B919F7B3" xlink:to="loc_us-gaap_IncomeTaxesPaid_12A86DF64D0D18E14E271743B935E0B7" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_1C016763C0953FE2FBF416627EFB934A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_StatementTable_1C016763C0953FE2FBF416627EFB934A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_EA6D24552CAFE23221A616627EFBAFE3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1C016763C0953FE2FBF416627EFB934A" xlink:to="loc_dei_LegalEntityAxis_EA6D24552CAFE23221A616627EFBAFE3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A482EAE6E6BD0CA2BD8316627EFC3877_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_EA6D24552CAFE23221A616627EFBAFE3" xlink:to="loc_dd_DuPontDomain_A482EAE6E6BD0CA2BD8316627EFC3877_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A482EAE6E6BD0CA2BD8316627EFC3877" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_EA6D24552CAFE23221A616627EFBAFE3" xlink:to="loc_dd_DuPontDomain_A482EAE6E6BD0CA2BD8316627EFC3877" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_F694BF1210FC575EF30C16627EFCF40D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_A482EAE6E6BD0CA2BD8316627EFC3877" xlink:to="loc_dd_EIDMember_F694BF1210FC575EF30C16627EFCF40D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8F2B1571C8C19F1E68A116627EFC9E24" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1C016763C0953FE2FBF416627EFB934A" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8F2B1571C8C19F1E68A116627EFC9E24" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8F2B1571C8C19F1E68A116627EFC9E24" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8F2B1571C8C19F1E68A116627EFC9E24" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_4C358476B25CC8F1969116627EFD7282" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_4C358476B25CC8F1969116627EFD7282" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_928E70CD1941C207C35A16627EFD20E7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1B0745A96CD3645105F816627EFCD01F" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_928E70CD1941C207C35A16627EFD20E7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_B43185430482533C1F8916627EFDEF42" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_ProfitLoss_B43185430482533C1F8916627EFDEF42" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3E2619D88123ECB4912916627EFE13B5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3E2619D88123ECB4912916627EFE13B5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_4EAD52980505144446A116627EFE32D4" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_4EAD52980505144446A116627EFE32D4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_58F897C0FAEC0AB6AAB116627EFE6408" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_58F897C0FAEC0AB6AAB116627EFE6408" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1D7BADF394A8402A132916627EFE03CD" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_1D7BADF394A8402A132916627EFE03CD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_0AD343BB2038FF36BB8416627EFEFC02" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_0AD343BB2038FF36BB8416627EFEFC02" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_6B8FDB45B62DD7E9B69216627EFE57FA" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_6B8FDB45B62DD7E9B69216627EFE57FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_B3C8F4E33BFE0292CB7116627EFFD409" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_EE6BFBCF51D6A4B3EDF216627EFD1F99" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_B3C8F4E33BFE0292CB7116627EFFD409" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedStatementsOfEquity" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_8B67C8026C30A4ECE6B61BD018874F9F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:to="loc_dd_CompanyAxis_8B67C8026C30A4ECE6B61BD018874F9F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_8B67C8026C30A4ECE6B61BD018874F9F" xlink:to="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_8B67C8026C30A4ECE6B61BD018874F9F" xlink:to="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontMember" xlink:label="loc_dd_DowDuPontMember_A86E302E89163926170B1BD0188750ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254" xlink:to="loc_dd_DowDuPontMember_A86E302E89163926170B1BD0188750ED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_C2A7EA2CDB58D497C8331BD0188766A6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_C22378B4F851484B0D091BD018876254" xlink:to="loc_dd_CortevaMember_C2A7EA2CDB58D497C8331BD0188766A6" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_6D2CA6E457EACCA8E65E1BD018886096" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:to="loc_dei_LegalEntityAxis_6D2CA6E457EACCA8E65E1BD018886096" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F9C6C2033893CBEC77E91BD01888E249_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6D2CA6E457EACCA8E65E1BD018886096" xlink:to="loc_dd_DuPontDomain_F9C6C2033893CBEC77E91BD01888E249_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F9C6C2033893CBEC77E91BD01888E249" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6D2CA6E457EACCA8E65E1BD018886096" xlink:to="loc_dd_DuPontDomain_F9C6C2033893CBEC77E91BD01888E249" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_3FE480635609CC1ED36D1BD018886374" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_F9C6C2033893CBEC77E91BD01888E249" xlink:to="loc_dd_EIDMember_3FE480635609CC1ED36D1BD018886374" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_558BFFFE0BBE3EA668191BD018880765" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:to="loc_srt_RestatementAxis_558BFFFE0BBE3EA668191BD018880765" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_C75C336D768C601ADD811BD01889D812_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_558BFFFE0BBE3EA668191BD018880765" xlink:to="loc_srt_RestatementDomain_C75C336D768C601ADD811BD01889D812_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_C75C336D768C601ADD811BD01889D812" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_558BFFFE0BBE3EA668191BD018880765" xlink:to="loc_srt_RestatementDomain_C75C336D768C601ADD811BD01889D812" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_86399EBCAB4FC58222E71BD0188988C9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_C75C336D768C601ADD811BD01889D812" xlink:to="loc_dd_SuccessorPeriodMember_86399EBCAB4FC58222E71BD0188988C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_BB1D49A18BB3F9693CF01BD018897416" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8ECE11518856FD01DF9A1BD018864500" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_BB1D49A18BB3F9693CF01BD018897416" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_BB1D49A18BB3F9693CF01BD018897416" xlink:to="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_BB1D49A18BB3F9693CF01BD018897416" xlink:to="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember_44939E6DEFEF9DB8A5D71BD0188ACAF4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_PreferredStockMember_44939E6DEFEF9DB8A5D71BD0188ACAF4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_DDFB768D3CC9D6A2E4541BD0188A3E24" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_CommonStockMember_DDFB768D3CC9D6A2E4541BD0188A3E24" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_F6F8F4907E4A9BAD19AD1BD0188A0C99" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_F6F8F4907E4A9BAD19AD1BD0188A0C99" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivisionalEquityMember" xlink:label="loc_dd_DivisionalEquityMember_3F36DC2F67A6180659CB1BD0188A6541" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_dd_DivisionalEquityMember_3F36DC2F67A6180659CB1BD0188A6541" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_F87C12DB0611B89179671BD0188BDB88" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_RetainedEarningsMember_F87C12DB0611B89179671BD0188BDB88" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C0B7CB855B4808E4B5E91BD0188BD05B" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C0B7CB855B4808E4B5E91BD0188BD05B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_13AEE88417E010A4C8F41BD0188B6F06" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_TreasuryStockMember_13AEE88417E010A4C8F41BD0188B6F06" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_032FBBEB1722426AD1BA1BD0188BA0F8" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0664D4A40C31F3922B331BD0188950C9" xlink:to="loc_us-gaap_NoncontrollingInterestMember_032FBBEB1722426AD1BA1BD0188BA0F8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FCCC22B788366A0C5F0B1BD0188B52C6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FCCC22B788366A0C5F0B1BD0188B52C6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_EFDB36C5E2682A36B42A1BD0188C8275" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_ProfitLoss_EFDB36C5E2682A36B42A1BD0188C8275" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_337D883370C3436363161BD0188C211D" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_337D883370C3436363161BD0188C211D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="loc_us-gaap_DividendsCommonStock_3FA1A392D5EF9E0BD4FC1BD0188CEF63" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_DividendsCommonStock_3FA1A392D5EF9E0BD4FC1BD0188CEF63" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="loc_us-gaap_DividendsPreferredStock_9CCF7D42257F32EA9DFB1BD0188C9AEF" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_DividendsPreferredStock_9CCF7D42257F32EA9DFB1BD0188C9AEF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDistributionsToAffiliates" xlink:label="loc_us-gaap_PaymentsOfDistributionsToAffiliates_B8EDC95B71127C2AB2141BD0188CC752" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_PaymentsOfDistributionsToAffiliates_B8EDC95B71127C2AB2141BD0188CC752" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromContributionsFromParent" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_7B3EB07D911EA34421C51BD0188D01AF" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_ProceedsFromContributionsFromParent_7B3EB07D911EA34421C51BD0188D01AF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueOther" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueOther_5DF9EE20A5BF028508361BD0188DCD58" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueOther_5DF9EE20A5BF028508361BD0188DCD58" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_E02CD1A4A20E1BD4C53E1BD0188D9BA8" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_E02CD1A4A20E1BD4C53E1BD0188D9BA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockRetiredCostMethodAmount" xlink:label="loc_us-gaap_TreasuryStockRetiredCostMethodAmount_D0C7F40388AD1C53A8AE1BD0188D6D6D" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_TreasuryStockRetiredCostMethodAmount_D0C7F40388AD1C53A8AE1BD0188D6D6D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_F4DCFEF61DDD7BF7864E1BD0188DD854" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_F4DCFEF61DDD7BF7864E1BD0188DD854" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityNoteSpinoffTransaction" xlink:label="loc_us-gaap_StockholdersEquityNoteSpinoffTransaction_F227CBC0028C8C1E8BB21BD0188D736F" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_StockholdersEquityNoteSpinoffTransaction_F227CBC0028C8C1E8BB21BD0188D736F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_D4F268C20F6BA5A0C8AB1BD0188ED0D5" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_D4F268C20F6BA5A0C8AB1BD0188ED0D5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="loc_us-gaap_StockholdersEquityOther_BBBBFDB848538AA835251BD0188E8C89" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0376EA96627FCA0501BD0188B9035" xlink:to="loc_us-gaap_StockholdersEquityOther_BBBBFDB848538AA835251BD0188E8C89" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedStatementsOfEquityParentheticals" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_932482BF6B3509095F101750BED0A2D3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_59D4DAB1B5A43C1418431750BECF7F5D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_932482BF6B3509095F101750BED0A2D3" xlink:to="loc_us-gaap_StatementTable_59D4DAB1B5A43C1418431750BECF7F5D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_A50A961BC8838CC6BB1517A202255207" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_59D4DAB1B5A43C1418431750BECF7F5D" xlink:to="loc_us-gaap_StatementClassOfStockAxis_A50A961BC8838CC6BB1517A202255207" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_A50A961BC8838CC6BB1517A202255207" xlink:to="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_A50A961BC8838CC6BB1517A202255207" xlink:to="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.50SeriesPreferredStockMember" xlink:label="loc_dd_A3.50SeriesPreferredStockMember_430DDC061C45C33207BB17A23A530D73" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733" xlink:to="loc_dd_A3.50SeriesPreferredStockMember_430DDC061C45C33207BB17A23A530D73" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.50SeriesPreferredStockMember" xlink:label="loc_dd_A4.50SeriesPreferredStockMember_E8673F384E602BBDDEF417A202FD1EC0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1D3FE7C9C5515D2CD13917A202279733" xlink:to="loc_dd_A4.50SeriesPreferredStockMember_E8673F384E602BBDDEF417A202FD1EC0" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_DA847B09C3C03C2BE8BA17A00BF8A194" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_59D4DAB1B5A43C1418431750BECF7F5D" xlink:to="loc_dei_LegalEntityAxis_DA847B09C3C03C2BE8BA17A00BF8A194" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_59EC55C23C2165A32C8717A00BF86029_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_DA847B09C3C03C2BE8BA17A00BF8A194" xlink:to="loc_dd_DuPontDomain_59EC55C23C2165A32C8717A00BF86029_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_59EC55C23C2165A32C8717A00BF86029" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_DA847B09C3C03C2BE8BA17A00BF8A194" xlink:to="loc_dd_DuPontDomain_59EC55C23C2165A32C8717A00BF86029" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_A8CFD139879367427BAA17A0241D0EB4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_59EC55C23C2165A32C8717A00BF86029" xlink:to="loc_dd_EIDMember_A8CFD139879367427BAA17A0241D0EB4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_D1EE1A3143DCA37B47561750BED020BD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932482BF6B3509095F101750BED0A2D3" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_D1EE1A3143DCA37B47561750BED020BD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_PreferredStockDividendsPerShareDeclared_E2047B100CC78C6058E01750BED19EA7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932482BF6B3509095F101750BED0A2D3" xlink:to="loc_us-gaap_PreferredStockDividendsPerShareDeclared_E2047B100CC78C6058E01750BED19EA7" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ConsolidatedStatementsOfIncome" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_16B5E36862FF942006B215B22B9F032F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_StatementTable_16B5E36862FF942006B215B22B9F032F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_9376638C0FDF3DB453C515B22BA1917F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_16B5E36862FF942006B215B22B9F032F" xlink:to="loc_dei_LegalEntityAxis_9376638C0FDF3DB453C515B22BA1917F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_D5F1BEB72F02D4BA458F15B22BA1911C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9376638C0FDF3DB453C515B22BA1917F" xlink:to="loc_dd_DuPontDomain_D5F1BEB72F02D4BA458F15B22BA1911C_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_D5F1BEB72F02D4BA458F15B22BA1911C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9376638C0FDF3DB453C515B22BA1917F" xlink:to="loc_dd_DuPontDomain_D5F1BEB72F02D4BA458F15B22BA1911C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_462655EEFC18C77C9FDF15B22BA63304" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_D5F1BEB72F02D4BA458F15B22BA1911C" xlink:to="loc_dd_EIDMember_462655EEFC18C77C9FDF15B22BA63304" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_EFD8B25CEF4E0A62E5FD15B22BA718AF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_Revenues_EFD8B25CEF4E0A62E5FD15B22BA718AF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_78BAAD275748FEB8194F15B22BA8140C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_78BAAD275748FEB8194F15B22BA8140C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_E240EF65E0D7916CFFA115B22BA8B1C5" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_E240EF65E0D7916CFFA115B22BA8B1C5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_9E14D2C4514DB140CED415B22BA8C673" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_9E14D2C4514DB140CED415B22BA8C673" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_996F04F602075FEEEAA815B22BA872BF" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_996F04F602075FEEEAA815B22BA872BF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_6E0E5D080E400F8F904015B22BA86663" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_6E0E5D080E400F8F904015B22BA86663" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_0CEB49AB1444BFB0636115B22BA88105" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_0CEB49AB1444BFB0636115B22BA88105" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationIntegrationAndSeparationRelatedCosts" xlink:label="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_DCFDFDEB40ECEC11DAE915B22BA96B7A" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_DCFDFDEB40ECEC11DAE915B22BA96B7A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_B2630C6DACF06BB170DE15B22BA9E07A" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_B2630C6DACF06BB170DE15B22BA9E07A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_690B283D54B82025849015B22BA98CCC" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_690B283D54B82025849015B22BA98CCC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_971BDA5C4C00C7D24A1F15B22BA9612A" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_971BDA5C4C00C7D24A1F15B22BA9612A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_673B9D6B1516C4CA4E6715B22BA91ABA" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_InterestAndDebtExpense_673B9D6B1516C4CA4E6715B22BA91ABA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_75713F2C29AC51379BEF15B22BA98976" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_75713F2C29AC51379BEF15B22BA98976" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_42BDE05A5FFDFF09CE3115B22BAE17A1" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_42BDE05A5FFDFF09CE3115B22BAE17A1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_96CCCEA4AA6A61EEAC2415B22BAEF174" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_96CCCEA4AA6A61EEAC2415B22BAEF174" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_72C1BB6C42D77899537715B22BAE1D2A" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_72C1BB6C42D77899537715B22BAE1D2A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_6FFC6000C1DE3B23520215B22BAE5407" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_ProfitLoss_6FFC6000C1DE3B23520215B22BAE5407" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2DBFB557283C20F2FBEF15B22BAF323A" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2DBFB557283C20F2FBEF15B22BAF323A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_B4C1FFB54B7A68CC171C15B22BAF7919" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_NetIncomeLoss_B4C1FFB54B7A68CC171C15B22BAF7919" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_AFA9810282927BB71CEF15B22BAF9431" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_AFA9810282927BB71CEF15B22BAF9431" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_A9B2AECD2886A014883A15B22BAF8B11" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare_A9B2AECD2886A014883A15B22BAF8B11" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_421DE1E87C940A78F0A215B22BAF959B" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_EarningsPerShareBasic_421DE1E87C940A78F0A215B22BAF959B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_9B4C9AB1AA43791231DB15B22BAF1EA8" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_9B4C9AB1AA43791231DB15B22BAF1EA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_2B6A145CBAA7A541875415B22BB09599" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare_2B6A145CBAA7A541875415B22BB09599" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_1AB3AB0D27ED3AD6DDF315B22BB0A86C" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4E78B9B538A37BFE7F6415B22BA70A18" xlink:to="loc_us-gaap_EarningsPerShareDiluted_1AB3AB0D27ED3AD6DDF315B22BB0A86C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DeiDocument" xlink:type="extended">
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentInformationLineItems" xlink:label="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:type="locator"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentInformationTable" xlink:label="loc_dei_DocumentInformationTable_8C9F4DD6B32BCA2CB27D3F7980CAEB36" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentInformationTable_8C9F4DD6B32BCA2CB27D3F7980CAEB36" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_6DE2C94A2332914ABD623F7980CB7C5A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_8C9F4DD6B32BCA2CB27D3F7980CAEB36" xlink:to="loc_dei_LegalEntityAxis_6DE2C94A2332914ABD623F7980CB7C5A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_0CBBDCBC698EB92150963F7980CBE913_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6DE2C94A2332914ABD623F7980CB7C5A" xlink:to="loc_dd_DuPontDomain_0CBBDCBC698EB92150963F7980CBE913_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_0CBBDCBC698EB92150963F7980CBE913" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6DE2C94A2332914ABD623F7980CB7C5A" xlink:to="loc_dd_DuPontDomain_0CBBDCBC698EB92150963F7980CBE913" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_6C06E179827BB07984EA3F7980CB00F0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_0CBBDCBC698EB92150963F7980CBE913" xlink:to="loc_dd_EIDMember_6C06E179827BB07984EA3F7980CB00F0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_D435728CF00F1F70DDD73F7980CBF92C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_8C9F4DD6B32BCA2CB27D3F7980CAEB36" xlink:to="loc_us-gaap_StatementClassOfStockAxis_D435728CF00F1F70DDD73F7980CBF92C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_D435728CF00F1F70DDD73F7980CBF92C" xlink:to="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_D435728CF00F1F70DDD73F7980CBF92C" xlink:to="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_F4CF96DFF5719F6A052B3F7980CCA9F4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070" xlink:to="loc_us-gaap_CommonStockMember_F4CF96DFF5719F6A052B3F7980CCA9F4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.50SeriesPreferredStockMember" xlink:label="loc_dd_A3.50SeriesPreferredStockMember_5073A2D766F1F3154FF63F7980CC2BED" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070" xlink:to="loc_dd_A3.50SeriesPreferredStockMember_5073A2D766F1F3154FF63F7980CC2BED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.50SeriesPreferredStockMember" xlink:label="loc_dd_A4.50SeriesPreferredStockMember_74849600D3D131ED73FF3F7980CD4CC2" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3D1E43786FA31322471B3F7980CCB070" xlink:to="loc_dd_A4.50SeriesPreferredStockMember_74849600D3D131ED73FF3F7980CD4CC2" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentAnnualReport" xlink:label="loc_dei_DocumentAnnualReport_8E901D7B7E9C44E6592F3F7980CD6A77" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentAnnualReport_8E901D7B7E9C44E6592F3F7980CD6A77" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_E93DEF44DEEB24E664F83F7980CD02E8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentType_E93DEF44DEEB24E664F83F7980CD02E8" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_59301E5B41E7C8655E473F7980CD3F67" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_AmendmentFlag_59301E5B41E7C8655E473F7980CD3F67" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_644EA31C192C828BF4C63F7980CECBCC" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentPeriodEndDate_644EA31C192C828BF4C63F7980CECBCC" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_686372680A9A3D3C6F263F7980CE2414" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityRegistrantName_686372680A9A3D3C6F263F7980CE2414" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="loc_dei_EntityIncorporationStateCountryCode_3D0CD6844686924E26313F7980CEDC9B" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityIncorporationStateCountryCode_3D0CD6844686924E26313F7980CEDC9B" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_CDC63979DA8FABF2BAA33F7980CEE56F" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityCentralIndexKey_CDC63979DA8FABF2BAA33F7980CEE56F" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_E96875AA2CB7E6740A2D3F7980CE9AD5" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_CurrentFiscalYearEndDate_E96875AA2CB7E6740A2D3F7980CE9AD5" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_4B760D5AA71C817678803F7980CE0DA2" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentFiscalYearFocus_4B760D5AA71C817678803F7980CE0DA2" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_D9995854BCE7D5C5081B3F7980CFD38B" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentFiscalPeriodFocus_D9995854BCE7D5C5081B3F7980CFD38B" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_F4011CB73659813ABB2D3F7980CF3857" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_F4011CB73659813ABB2D3F7980CF3857" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_4C1445FD300B3161522D3F7980CFF932" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityVoluntaryFilers_4C1445FD300B3161522D3F7980CFF932" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_24467643B720918C28ED3F7980CFD9EB" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityCurrentReportingStatus_24467643B720918C28ED3F7980CFD9EB" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInteractiveDataCurrent" xlink:label="loc_dei_EntityInteractiveDataCurrent_4010D1AF1AE5A22FB0EE3F7980CF7652" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityInteractiveDataCurrent_4010D1AF1AE5A22FB0EE3F7980CF7652" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_B63F95DFF26D89D8C9713F7980D05937" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityFilerCategory_B63F95DFF26D89D8C9713F7980D05937" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_B86D8EE0705800E4D80A3F7980D0882D" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityEmergingGrowthCompany_B86D8EE0705800E4D80A3F7980D0882D" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_070B23BD5957EF8859BB3F7980D06C60" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityPublicFloat_070B23BD5957EF8859BB3F7980D06C60" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_91208690E8D2C758E3F03F7980D00F5B" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_91208690E8D2C758E3F03F7980D00F5B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_84CFE86FBD6B881A106A3F7980D03070" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_84CFE86FBD6B881A106A3F7980D03070" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_BEAE755B1A708E05491F3F7980D03AF5" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntitySmallBusiness_BEAE755B1A708E05491F3F7980D03AF5" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_216C52B92940783543383F7980D1C59F" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityShellCompany_216C52B92940783543383F7980D1C59F" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentTransitionReport" xlink:label="loc_dei_DocumentTransitionReport_F2E5DF6A61512D07D36E3F7980D169A4" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentTransitionReport_F2E5DF6A61512D07D36E3F7980D169A4" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:label="loc_dei_EntityFileNumber_CD469CF8800FEAADB87E3F7980D1B5B9" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityFileNumber_CD469CF8800FEAADB87E3F7980D1B5B9" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:label="loc_dei_EntityTaxIdentificationNumber_16F1D70152DC3285AB583F7980D1E9D1" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityTaxIdentificationNumber_16F1D70152DC3285AB583F7980D1E9D1" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:label="loc_dei_EntityAddressAddressLine1_59B61C337878DFFBE1EF3F7980D1EFA2" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityAddressAddressLine1_59B61C337878DFFBE1EF3F7980D1EFA2" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="loc_dei_EntityAddressCityOrTown_B61104FB6A2ADE6643253F7980D166EE" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityAddressCityOrTown_B61104FB6A2ADE6643253F7980D166EE" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="loc_dei_EntityAddressStateOrProvince_BF9DB237C5565BF406E83F7980D273AD" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityAddressStateOrProvince_BF9DB237C5565BF406E83F7980D273AD" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="loc_dei_EntityAddressPostalZipCode_B83753A30B29CA03BD273F7980D280CF" xlink:type="locator"/>
<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_EntityAddressPostalZipCode_B83753A30B29CA03BD273F7980D280CF" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:label="loc_dei_CityAreaCode_AD7371670EAD8ADF22C23F7980D2E98B" xlink:type="locator"/>
<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_CityAreaCode_AD7371670EAD8ADF22C23F7980D2E98B" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:label="loc_dei_LocalPhoneNumber_360B98505D31487124613F7980D2E843" xlink:type="locator"/>
<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_LocalPhoneNumber_360B98505D31487124613F7980D2E843" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:label="loc_dei_Security12bTitle_FBF68948D266B91A775E3F7980D21F2A" xlink:type="locator"/>
<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_Security12bTitle_FBF68948D266B91A775E3F7980D21F2A" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_47FE1115C74A7026D0533F7980D33D51" xlink:type="locator"/>
<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_TradingSymbol_47FE1115C74A7026D0533F7980D33D51" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:label="loc_dei_SecurityExchangeName_B8DAB6DA15C73C48C3E73F7980D36F8A" xlink:type="locator"/>
<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_SecurityExchangeName_B8DAB6DA15C73C48C3E73F7980D36F8A" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentsIncorporatedByReferenceTextBlock" xlink:label="loc_dei_DocumentsIncorporatedByReferenceTextBlock_5E6890DC86C06A7D7ED43F79A3136F80" xlink:type="locator"/>
<link:definitionArc order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_8449083A6ECEBA604BFD3F7980CD169E" xlink:to="loc_dei_DocumentsIncorporatedByReferenceTextBlock_5E6890DC86C06A7D7ED43F79A3136F80" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactions" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessDepreciationAndCapitalExpendituresDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A1517E602C5FE359A77BF88240E8A767" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_634D6473580D6B503AFFF88240E7D0BF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A1517E602C5FE359A77BF88240E8A767" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_634D6473580D6B503AFFF88240E7D0BF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_6D6BAAABE6D3BE5F7F58F88240E78924" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_634D6473580D6B503AFFF88240E7D0BF" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_6D6BAAABE6D3BE5F7F58F88240E78924" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8C6D5F994ED80383628EF88240E83105_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_6D6BAAABE6D3BE5F7F58F88240E78924" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8C6D5F994ED80383628EF88240E83105_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8C6D5F994ED80383628EF88240E83105" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_6D6BAAABE6D3BE5F7F58F88240E78924" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8C6D5F994ED80383628EF88240E83105" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivestedAgBusinessMember" xlink:label="loc_dd_DivestedAgBusinessMember_CA2FE0951BB1C4107628F88240E82D86" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8C6D5F994ED80383628EF88240E83105" xlink:to="loc_dd_DivestedAgBusinessMember_CA2FE0951BB1C4107628F88240E82D86" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationDepreciation" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_37DEE4422DE6B7B033A1F88240E80AC8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A1517E602C5FE359A77BF88240E8A767" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_37DEE4422DE6B7B033A1F88240E80AC8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalExpenditureDiscontinuedOperations" xlink:label="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_65A0ECE0E3DFFA8D4D74F88240E991F3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A1517E602C5FE359A77BF88240E8A767" xlink:to="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_65A0ECE0E3DFFA8D4D74F88240E991F3" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsDivestedAgBusinessResultsOfOperationsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_49B74ADC681A289A9C1034CF29EAC788" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_49B74ADC681A289A9C1034CF29EAC788" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_C2BD18D339D20308EF4734CF29EA05E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_49B74ADC681A289A9C1034CF29EAC788" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_C2BD18D339D20308EF4734CF29EA05E4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_AABB15776E699B9BEF0734CF29EAB5B4_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_C2BD18D339D20308EF4734CF29EA05E4" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_AABB15776E699B9BEF0734CF29EAB5B4_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_AABB15776E699B9BEF0734CF29EAB5B4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_C2BD18D339D20308EF4734CF29EA05E4" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_AABB15776E699B9BEF0734CF29EAB5B4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_5BC715BA58ABBFF59FE334CF29EA4BF2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_AABB15776E699B9BEF0734CF29EAB5B4" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_5BC715BA58ABBFF59FE334CF29EA4BF2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B1C4CA61E51DE0F2F0F235D54C343A16" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_49B74ADC681A289A9C1034CF29EAC788" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B1C4CA61E51DE0F2F0F235D54C343A16" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_22A705DB6DFD18E39E9D35D54C371E71_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B1C4CA61E51DE0F2F0F235D54C343A16" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_22A705DB6DFD18E39E9D35D54C371E71_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_22A705DB6DFD18E39E9D35D54C371E71" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B1C4CA61E51DE0F2F0F235D54C343A16" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_22A705DB6DFD18E39E9D35D54C371E71" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FavorableSupplyContractMember" xlink:label="loc_dd_FavorableSupplyContractMember_1C45119667CAB6C20B0A35D571348852" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_22A705DB6DFD18E39E9D35D54C371E71" xlink:to="loc_dd_FavorableSupplyContractMember_1C45119667CAB6C20B0A35D571348852" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_313174BD7751402254E134CF29EA12D4" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_49B74ADC681A289A9C1034CF29EAC788" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_313174BD7751402254E134CF29EA12D4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7354733C5248C22877E634CF29EA827B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_313174BD7751402254E134CF29EA12D4" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7354733C5248C22877E634CF29EA827B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7354733C5248C22877E634CF29EA827B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_313174BD7751402254E134CF29EA12D4" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7354733C5248C22877E634CF29EA827B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivestedAgBusinessMember" xlink:label="loc_dd_DivestedAgBusinessMember_EAC75B298DA5A3BDBF8034CF29EAB9CA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7354733C5248C22877E634CF29EA827B" xlink:to="loc_dd_DivestedAgBusinessMember_EAC75B298DA5A3BDBF8034CF29EAB9CA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_62212959273F8CCB569734CF29EAEFF3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_62212959273F8CCB569734CF29EAEFF3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_C389ECF607F3ECF1165434CF29EA25C3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_C389ECF607F3ECF1165434CF29EA25C3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_99C01D30D7C6BC51DB5234CF29EAC57B" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_99C01D30D7C6BC51DB5234CF29EAC57B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_AA0A5DFDF3263B1AEECB34CF29EA3A80" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_AA0A5DFDF3263B1AEECB34CF29EA3A80" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_07403378AE40337050C034CF29EAA1F9" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_07403378AE40337050C034CF29EAA1F9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_CB14CC56C714E85C84C134CF29EAFF71" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_CB14CC56C714E85C84C134CF29EAFF71" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_677B118DBF573EE6404034CF29EAE875" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_677B118DBF573EE6404034CF29EAE875" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_52C425719D5E1BBC7F6C34CF29EA85C1" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_52C425719D5E1BBC7F6C34CF29EA85C1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_55C60CD32D1337C7A3D334CF29EA02E9" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_55C60CD32D1337C7A3D334CF29EA02E9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_475F47F3B1EF13E849F334CF29EA72F0" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_475F47F3B1EF13E849F334CF29EA72F0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_CC49E5031F1C6AE2192934CF29EAAE9E" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_CC49E5031F1C6AE2192934CF29EAAE9E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_DC41F5C8B468ADADDDF534CF29EA973F" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_DC41F5C8B468ADADDDF534CF29EA973F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationTransactionCosts" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationTransactionCosts_E9BD587DE0ABA6BAE38B34CF29EA98AE" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_BD6907C34E0CD7BEAEA834CF29EA6B29" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationTransactionCosts_E9BD587DE0ABA6BAE38B34CF29EA98AE" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReportingUnitAxis" xlink:label="loc_us-gaap_ReportingUnitAxis_50715AA29B8AC954199F3F4C20544CE2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:to="loc_us-gaap_ReportingUnitAxis_50715AA29B8AC954199F3F4C20544CE2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReportingUnitDomain" xlink:label="loc_us-gaap_ReportingUnitDomain_C40B199899B3D2E4F6033F4C2054A28F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReportingUnitAxis_50715AA29B8AC954199F3F4C20544CE2" xlink:to="loc_us-gaap_ReportingUnitDomain_C40B199899B3D2E4F6033F4C2054A28F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReportingUnitDomain" xlink:label="loc_us-gaap_ReportingUnitDomain_C40B199899B3D2E4F6033F4C2054A28F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReportingUnitAxis_50715AA29B8AC954199F3F4C20544CE2" xlink:to="loc_us-gaap_ReportingUnitDomain_C40B199899B3D2E4F6033F4C2054A28F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndustrialBiosciencesMember" xlink:label="loc_dd_IndustrialBiosciencesMember_FBBE767EDDDEFB1A070A3F4C20548DB7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_C40B199899B3D2E4F6033F4C2054A28F" xlink:to="loc_dd_IndustrialBiosciencesMember_FBBE767EDDDEFB1A070A3F4C20548DB7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_6453340FB8DFC68F72CC3F4C205505E0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_6453340FB8DFC68F72CC3F4C205505E0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_6453340FB8DFC68F72CC3F4C205505E0" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_6453340FB8DFC68F72CC3F4C205505E0" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccountsandNotesReceivableMember" xlink:label="loc_dd_AccountsandNotesReceivableMember_55547E01774F436F68583F4C20558657" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:to="loc_dd_AccountsandNotesReceivableMember_55547E01774F436F68583F4C20558657" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_F791132B321FCA5E73813F4C2056BA4A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:to="loc_us-gaap_OtherAssetsMember_F791132B321FCA5E73813F4C2056BA4A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_23457AB4FB2D20620A063F4C20564B77" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_23457AB4FB2D20620A063F4C20564B77" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_249AF81A02B0236CC3AF3F4C2056C434" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_EA38AC30A575E388D0513F4C2055DC02" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_249AF81A02B0236CC3AF3F4C2056C434" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_0E06DE3396101DE0500F3F4C20564B05" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:to="loc_srt_CounterpartyNameAxis_0E06DE3396101DE0500F3F4C20564B05" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_0E06DE3396101DE0500F3F4C20564B05" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_0E06DE3396101DE0500F3F4C20564B05" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontdeNemoursMember" xlink:label="loc_dd_DuPontdeNemoursMember_3E6BE45FED94C339CE093F4C20568C4D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991" xlink:to="loc_dd_DuPontdeNemoursMember_3E6BE45FED94C339CE093F4C20568C4D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowMember" xlink:label="loc_dd_DowMember_8916B18FA8285DC1965C3F4C2057FCD1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_D97D89D4DF6FCB84DA443F4C2056E991" xlink:to="loc_dd_DowMember_8916B18FA8285DC1965C3F4C2057FCD1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_E294B82520186E43EB943F4C20575766" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_E294B82520186E43EB943F4C20575766" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4CC4D2ABA88DC51E1A8D3F4C2057E583_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_E294B82520186E43EB943F4C20575766" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4CC4D2ABA88DC51E1A8D3F4C2057E583_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4CC4D2ABA88DC51E1A8D3F4C2057E583" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_E294B82520186E43EB943F4C20575766" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4CC4D2ABA88DC51E1A8D3F4C2057E583" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FavorableSupplyContractMember" xlink:label="loc_dd_FavorableSupplyContractMember_34DEBB227E9399C9874B3F4C2058A1A5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4CC4D2ABA88DC51E1A8D3F4C2057E583" xlink:to="loc_dd_FavorableSupplyContractMember_34DEBB227E9399C9874B3F4C2058A1A5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C742737E25650927238A3F4C2058182B" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_79FF59967CD6F57233F83F4C2053F91D" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C742737E25650927238A3F4C2058182B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C742737E25650927238A3F4C2058182B" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C742737E25650927238A3F4C2058182B" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SpecialtyProductsDisposalMember" xlink:label="loc_dd_SpecialtyProductsDisposalMember_20332391530936F4A4883F4C20582FB4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:to="loc_dd_SpecialtyProductsDisposalMember_20332391530936F4A4883F4C20582FB4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivestedAgBusinessMember" xlink:label="loc_dd_DivestedAgBusinessMember_883F6DEE1EEDCD262D3E3F4C20599762" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:to="loc_dd_DivestedAgBusinessMember_883F6DEE1EEDCD262D3E3F4C20599762" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASDivestedAgBusinessMemberMember" xlink:label="loc_dd_DASDivestedAgBusinessMemberMember_2EFB364A73729F89FC5E3F4C205995A6" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:to="loc_dd_DASDivestedAgBusinessMemberMember_2EFB364A73729F89FC5E3F4C205995A6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherdiscontinuedoperationsMember" xlink:label="loc_dd_OtherdiscontinuedoperationsMember_B5D38CF790986653CDE33F4C20592178" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_52F160BB68367D230ADC3F4C20580C1B" xlink:to="loc_dd_OtherdiscontinuedoperationsMember_B5D38CF790986653CDE33F4C20592178" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnificationAssets" xlink:label="loc_dd_IndemnificationAssets_1E52221D771AAFA0661B3F4C2059B2ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_dd_IndemnificationAssets_1E52221D771AAFA0661B3F4C2059B2ED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnifiedLiabilities" xlink:label="loc_dd_IndemnifiedLiabilities_9CA90C06556FE2DF7FE13F4C20A20531" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_dd_IndemnifiedLiabilities_9CA90C06556FE2DF7FE13F4C20A20531" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_C2DCABBAE66C193427EE3F4C205A564A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_C2DCABBAE66C193427EE3F4C205A564A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_3D50F789D91D583322813F4C205AF70B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_3D50F789D91D583322813F4C205AF70B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_35FAF9ED343D7313722C3F4C205A503E" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_35FAF9ED343D7313722C3F4C205A503E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D34A0B017D0AD877B9D83F4C205A180A" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D34A0B017D0AD877B9D83F4C205A180A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_57F974338620E3DD213C3F4C205ADE80" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_73E502A4C126976D224F3F4C2059E9C4" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_57F974338620E3DD213C3F4C205ADE80" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsDivestituresAndOtherTransactionsPchemResultsOfOperationsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_33EB309F404C47BB860A3F4CA8F095C1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_33EB309F404C47BB860A3F4CA8F095C1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_FC360B410720BB22AD343F4CA8F089E5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_33EB309F404C47BB860A3F4CA8F095C1" xlink:to="loc_srt_CounterpartyNameAxis_FC360B410720BB22AD343F4CA8F089E5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6B5AE13C753CF5B9DBD93F4CA8F0C935_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_FC360B410720BB22AD343F4CA8F089E5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6B5AE13C753CF5B9DBD93F4CA8F0C935_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6B5AE13C753CF5B9DBD93F4CA8F0C935" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_FC360B410720BB22AD343F4CA8F089E5" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6B5AE13C753CF5B9DBD93F4CA8F0C935" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PerformanceChemicalsMember" xlink:label="loc_dd_PerformanceChemicalsMember_EE2D26F82A02154C499C3F4CA8F1AC90" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_6B5AE13C753CF5B9DBD93F4CA8F0C935" xlink:to="loc_dd_PerformanceChemicalsMember_EE2D26F82A02154C499C3F4CA8F1AC90" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_599D9C455482F309D1C63F4CA8F1786B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_33EB309F404C47BB860A3F4CA8F095C1" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_599D9C455482F309D1C63F4CA8F1786B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_599D9C455482F309D1C63F4CA8F1786B" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_599D9C455482F309D1C63F4CA8F1786B" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccountsandNotesReceivableMember" xlink:label="loc_dd_AccountsandNotesReceivableMember_17955E5A0B4F9654DEFD3F4CA8F26DE5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:to="loc_dd_AccountsandNotesReceivableMember_17955E5A0B4F9654DEFD3F4CA8F26DE5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_6427222EB25D7D1907ED3F4CA8F2A1AA" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:to="loc_us-gaap_OtherAssetsMember_6427222EB25D7D1907ED3F4CA8F2A1AA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_46B2CD08D9CF4F8069783F4CA8F271B9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_46B2CD08D9CF4F8069783F4CA8F271B9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_1FBAF118581E3701FEF33F4CA8F27FEA" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_2CFF252C0ADCF0D3D6D83F4CA8F19643" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_1FBAF118581E3701FEF33F4CA8F27FEA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2BE6D8D8CEBAC4C10AD53F4CA8F30C17" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_33EB309F404C47BB860A3F4CA8F095C1" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2BE6D8D8CEBAC4C10AD53F4CA8F30C17" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_6732BAA9F1F6F5151B323F4CA8F34324_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2BE6D8D8CEBAC4C10AD53F4CA8F30C17" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_6732BAA9F1F6F5151B323F4CA8F34324_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_6732BAA9F1F6F5151B323F4CA8F34324" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_2BE6D8D8CEBAC4C10AD53F4CA8F30C17" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_6732BAA9F1F6F5151B323F4CA8F34324" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PerformanceChemicalsMember" xlink:label="loc_dd_PerformanceChemicalsMember_5C72617D2B4E949D21043F4CA8F34161" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_6732BAA9F1F6F5151B323F4CA8F34324" xlink:to="loc_dd_PerformanceChemicalsMember_5C72617D2B4E949D21043F4CA8F34161" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnificationAssets" xlink:label="loc_dd_IndemnificationAssets_CBA69027275A390004AA3F4CA8F4282F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_dd_IndemnificationAssets_CBA69027275A390004AA3F4CA8F4282F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnifiedLiabilities" xlink:label="loc_dd_IndemnifiedLiabilities_5D3026889CA0E273FDB83F4CA907513A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_dd_IndemnifiedLiabilities_5D3026889CA0E273FDB83F4CA907513A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_917CB1DE6488714B2C2A3F4CA8F4BCE3" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_917CB1DE6488714B2C2A3F4CA8F4BCE3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_756CEFCB03960EDD4EF33F4CA8F4F891" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_756CEFCB03960EDD4EF33F4CA8F4F891" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_A476A92A03BCB31C31613F4CA8F43B5D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_A476A92A03BCB31C31613F4CA8F43B5D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_5359A8ABE99D8A2562593F4CA8F590B5" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_5359A8ABE99D8A2562593F4CA8F590B5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_7882F4636311394D35E43F4CA8F58B98" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_7882F4636311394D35E43F4CA8F58B98" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GainLossRelatedToLitigationSettlementNetOfTax" xlink:label="loc_dd_GainLossRelatedToLitigationSettlementNetOfTax_019C5432AD415F83D9123F4CA8F6D400" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_1B150D41DA5830856FC53F4CA8F3518A" xlink:to="loc_dd_GainLossRelatedToLitigationSettlementNetOfTax_019C5432AD415F83D9123F4CA8F6D400" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsEcpDivestitureDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_C3F5600120213D8C34FC34CF2A1CDC0F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_C3F5600120213D8C34FC34CF2A1CDC0F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4D27C265B1597FB1D42934CF2A1C1404" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_C3F5600120213D8C34FC34CF2A1CDC0F" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4D27C265B1597FB1D42934CF2A1C1404" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2DB2A338ACEC0B0C4CF834CF2A1CBD34_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4D27C265B1597FB1D42934CF2A1C1404" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2DB2A338ACEC0B0C4CF834CF2A1CBD34_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2DB2A338ACEC0B0C4CF834CF2A1CBD34" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4D27C265B1597FB1D42934CF2A1C1404" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2DB2A338ACEC0B0C4CF834CF2A1CBD34" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ECPDisposalMember" xlink:label="loc_dd_ECPDisposalMember_0BCFD0BAF69839179BCC34CF2A1D0CBB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_2DB2A338ACEC0B0C4CF834CF2A1CBD34" xlink:to="loc_dd_ECPDisposalMember_0BCFD0BAF69839179BCC34CF2A1D0CBB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_697F2DCD5896502111F034CF2A1DE3D1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_697F2DCD5896502111F034CF2A1DE3D1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_70234A2C63278066DBD934CF2A1EC242" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_70234A2C63278066DBD934CF2A1EC242" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_1739E346C82D1870F66134CF2A1EBA5F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_1739E346C82D1870F66134CF2A1EBA5F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_2FF726DF6AC6CAEA5D1C34CF2A1E92CE" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_2FF726DF6AC6CAEA5D1C34CF2A1E92CE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets_E7DD9FEB1F5E381C9BE534CF2A1E13AE" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets_E7DD9FEB1F5E381C9BE534CF2A1E13AE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions_5A7DFC4D35224ED9155F34CF2A1EEC71" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions_5A7DFC4D35224ED9155F34CF2A1EEC71" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts_EE5DFEBDCD174410DE2434CF2A1FC3BC" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts_EE5DFEBDCD174410DE2434CF2A1FC3BC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_173F9C5D023B4CC9A0B834CF2A1FF356" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_173F9C5D023B4CC9A0B834CF2A1FF356" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_CE6C04996190C09A9C3734CF2A1F8B6A" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_CE6C04996190C09A9C3734CF2A1F8B6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_EF61783728CFFE33953634CF2A1FB72A" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_EF61783728CFFE33953634CF2A1FB72A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_873B8A993B5BE914A3AA34CF2A1FBD93" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_873B8A993B5BE914A3AA34CF2A1FBD93" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationDepreciation" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_F8471EBD4BBC3F4F5CF434CF2A1FBB92" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_F8471EBD4BBC3F4F5CF434CF2A1FBB92" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalExpenditureDiscontinuedOperations" xlink:label="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_BEDA26C976F73CF349A934CF2A20F8F5" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_BEDA26C976F73CF349A934CF2A20F8F5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_70041FE8D3D03272B9C834CF2A20DB33" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_70041FE8D3D03272B9C834CF2A20DB33" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_3371623B4A49F4EE2E4534CF2A20569B" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_3371623B4A49F4EE2E4534CF2A20569B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_0CC9A29E44AD7EFA998434CF2A20BA64" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_0CC9A29E44AD7EFA998434CF2A20BA64" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_D90584E8BC8DD49DAE0034CF2A20774F" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_D90584E8BC8DD49DAE0034CF2A20774F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_80F48FB4A20B963E606534CF2A21DC19" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_80F48FB4A20B963E606534CF2A21DC19" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates" xlink:label="loc_dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates_B1A2EF10AF46A55C21A234CF2A219AF2" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates_B1A2EF10AF46A55C21A234CF2A219AF2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_C78ADFBF29D39ECAEDFD34CF2A2165FA" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_C78ADFBF29D39ECAEDFD34CF2A2165FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_177373B9198DAA84401F34CF2A212F84" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_177373B9198DAA84401F34CF2A212F84" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_A0BC329CCB91A64E436934CF2A2199F2" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_A0BC329CCB91A64E436934CF2A2199F2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent_1DC9DCF1D0BA4090D75F34CF2A219E9D" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent_1DC9DCF1D0BA4090D75F34CF2A219E9D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_8253E926CBCB06C68CCB34CF2A219463" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_8253E926CBCB06C68CCB34CF2A219463" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_0339894A0F4330C8D00634CF2A22EEB9" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_0339894A0F4330C8D00634CF2A22EEB9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_FFBDB9B9AAD39C168BDD34CF2A224609" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_FFBDB9B9AAD39C168BDD34CF2A224609" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_636CB25611848FBD4BCB34CF2A22EAA8" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_636CB25611848FBD4BCB34CF2A22EAA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_BBBE3F0BC2BA9F0E133534CF2A222098" xlink:type="locator"/>
<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_BBBE3F0BC2BA9F0E133534CF2A222098" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_A810793BB8B8DB2A673E34CF2A227D79" xlink:type="locator"/>
<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_A810793BB8B8DB2A673E34CF2A227D79" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_48F86D4CDDCA3970248634CF2A234E56" xlink:type="locator"/>
<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_48F86D4CDDCA3970248634CF2A234E56" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_826EAA1EA07FF43F4C0D34CF2A23DC40" xlink:type="locator"/>
<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_826EAA1EA07FF43F4C0D34CF2A23DC40" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent_F47119664F8150BD7E0434CF2A23F710" xlink:type="locator"/>
<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent_F47119664F8150BD7E0434CF2A23F710" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent_74A34A71BAAD485094D234CF2A236FF5" xlink:type="locator"/>
<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent_74A34A71BAAD485094D234CF2A236FF5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_B907C379FFD934C208A834CF2A23CD63" xlink:type="locator"/>
<link:definitionArc order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_B907C379FFD934C208A834CF2A23CD63" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_81B8AAB4A4DCB6D0008A34CF2A247287" xlink:type="locator"/>
<link:definitionArc order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_81B8AAB4A4DCB6D0008A34CF2A247287" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_9862CF03ADCFB873A48834CF2A24FE7F" xlink:type="locator"/>
<link:definitionArc order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_A03CE7E33CE854E2B4D434CF2A1D58CF" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_9862CF03ADCFB873A48834CF2A24FE7F" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsSpDivestitureDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_72778036E2DF416A23D834CF2A058665" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_72778036E2DF416A23D834CF2A058665" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_0BBD0AC80D69B32E7DBE34CF2A066ACC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_72778036E2DF416A23D834CF2A058665" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_0BBD0AC80D69B32E7DBE34CF2A066ACC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_38C2C26D98160008559134CF2A0753C8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_0BBD0AC80D69B32E7DBE34CF2A066ACC" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_38C2C26D98160008559134CF2A0753C8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_38C2C26D98160008559134CF2A0753C8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_0BBD0AC80D69B32E7DBE34CF2A066ACC" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_38C2C26D98160008559134CF2A0753C8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SpecialtyProductsDisposalMember" xlink:label="loc_dd_SpecialtyProductsDisposalMember_1568204EFB882FA8BF5234CF2A07BA26" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_38C2C26D98160008559134CF2A0753C8" xlink:to="loc_dd_SpecialtyProductsDisposalMember_1568204EFB882FA8BF5234CF2A07BA26" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_44313302EC3329D85E5C34CF2A08A1ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_44313302EC3329D85E5C34CF2A08A1ED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_50FA9D366D469722459C34CF2A089DF1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_50FA9D366D469722459C34CF2A089DF1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_B6EA913A8EFFAFFEEC8334CF2A08BD53" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_B6EA913A8EFFAFFEEC8334CF2A08BD53" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_355497D71AC7E97D5D2B34CF2A08C6B1" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses_355497D71AC7E97D5D2B34CF2A08C6B1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_23F4A6E2D145DC57699F34CF2A080DBF" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_23F4A6E2D145DC57699F34CF2A080DBF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets_897193F3E8794BA028FE34CF2A090D65" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationAmortizationofIntangibleAssets_897193F3E8794BA028FE34CF2A090D65" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions_8F1C6504A3239659813B34CF2A09F7A0" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationRestructuringSettlementAndImpairmentProvisions_8F1C6504A3239659813B34CF2A09F7A0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts_8F29E0146818F3DC99D034CF2A09CB5A" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationIntegrationandSeparationCosts_8F29E0146818F3DC99D034CF2A09CB5A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_25A59751E4C39BABA6C834CF2A09EA74" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_25A59751E4C39BABA6C834CF2A09EA74" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_D16CABB936E972D102A634CF2A09FED4" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationNonoperatingIncomeExpense_D16CABB936E972D102A634CF2A09FED4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_35508AF1214B48BDFE6334CF2A0958D1" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_35508AF1214B48BDFE6334CF2A0958D1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_C7BFB9C40E6066B0190234CF2A092BF4" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_C7BFB9C40E6066B0190234CF2A092BF4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_82FDC2A030C967A2293B34CF2A0A1B96" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_82FDC2A030C967A2293B34CF2A0A1B96" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationDepreciation" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_634233145CF3717E1FDB34CF2A0A8926" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationDepreciation_634233145CF3717E1FDB34CF2A0A8926" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalExpenditureDiscontinuedOperations" xlink:label="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_1711FD6440019343ABB234CF2A0AAD37" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_CapitalExpenditureDiscontinuedOperations_1711FD6440019343ABB234CF2A0AAD37" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_CBB16DB1C460B957E83934CF2A0A2646" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_CBB16DB1C460B957E83934CF2A0A2646" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_D5C41E6E57A69529BF5A34CF2A0A2F1B" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_D5C41E6E57A69529BF5A34CF2A0A2F1B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_477DF9CD56B780CC511A34CF2A0BC57F" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_477DF9CD56B780CC511A34CF2A0BC57F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_2AD27EA1DE9D17ABB93334CF2A0BE89D" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_2AD27EA1DE9D17ABB93334CF2A0BE89D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_F02FC85AEC2A5E29073F34CF2A0B2543" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets_F02FC85AEC2A5E29073F34CF2A0B2543" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_C3D7DDD7C3E1100DC7DB34CF2A0B7B03" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_C3D7DDD7C3E1100DC7DB34CF2A0B7B03" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates" xlink:label="loc_dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates_5FEB6C458E6E0EAF5CBC34CF2A0B815C" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_Disposalgroupincludingdiscontinuedoperationsinvestmentinnonconsolidatedaffiliates_5FEB6C458E6E0EAF5CBC34CF2A0B815C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_A3F82CBFF85729AD3EB434CF2A0BE29A" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_A3F82CBFF85729AD3EB434CF2A0BE29A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_6790B69791F024ABBCD634CF2A0C6063" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_6790B69791F024ABBCD634CF2A0C6063" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_72A5781BDE6390CD4DFD34CF2A0C2613" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_72A5781BDE6390CD4DFD34CF2A0C2613" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent_5AC0867DE27E33A65E7434CF2A0C4DA4" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssetsNoncurrent_5AC0867DE27E33A65E7434CF2A0C4DA4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_29038D2C23C5E18B39DA34CF2A0C1DEF" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_29038D2C23C5E18B39DA34CF2A0C1DEF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_DB61DA901A6F0780518634CF2A0C8447" xlink:type="locator"/>
<link:definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_DB61DA901A6F0780518634CF2A0C8447" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_08FAA96EEA5B3C064A0C34CF2A0C7CE1" xlink:type="locator"/>
<link:definitionArc order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_08FAA96EEA5B3C064A0C34CF2A0C7CE1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_2B919BCBB0AB9F806DC434CF2A0CC180" xlink:type="locator"/>
<link:definitionArc order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_2B919BCBB0AB9F806DC434CF2A0CC180" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_0513ED94395D8F37C48434CF2A0D35F1" xlink:type="locator"/>
<link:definitionArc order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_0513ED94395D8F37C48434CF2A0D35F1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxesPayable_B252F32A84D0C8F1D21034CF2A0DE16D" xlink:type="locator"/>
<link:definitionArc order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxesPayable_B252F32A84D0C8F1D21034CF2A0DE16D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_5C0DB9D98FBA40A6617A34CF2A0D0C1E" xlink:type="locator"/>
<link:definitionArc order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_5C0DB9D98FBA40A6617A34CF2A0D0C1E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_515594CEF4C779499B8634CF2A0DCE57" xlink:type="locator"/>
<link:definitionArc order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_515594CEF4C779499B8634CF2A0DCE57" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_E0338A4CA38C955D4E1C34CF2A0D8784" xlink:type="locator"/>
<link:definitionArc order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_E0338A4CA38C955D4E1C34CF2A0D8784" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent_68BAB0CCCF1F5931D0D034CF2A0EA890" xlink:type="locator"/>
<link:definitionArc order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent_68BAB0CCCF1F5931D0D034CF2A0EA890" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent" xlink:label="loc_dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent_57A08CBD903816B76A1734CF2A0EED3B" xlink:type="locator"/>
<link:definitionArc order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_dd_DisposalGroupIncludingDiscontinuedOperationPensionandOtherPostEmploymentBenefitsObligationNoncurrent_57A08CBD903816B76A1734CF2A0EED3B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_D27EF01B74DD622A1EF334CF2A0E7DC0" xlink:type="locator"/>
<link:definitionArc order="38" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_D27EF01B74DD622A1EF334CF2A0E7DC0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_4EE18BA119147B124B3134CF2A0E4A32" xlink:type="locator"/>
<link:definitionArc order="39" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_4EE18BA119147B124B3134CF2A0E4A32" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_02512D3CECD116AAADE134CF2A0ED1FE" xlink:type="locator"/>
<link:definitionArc order="40" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8C68188FE349634AA48A34CF2A0714A3" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_02512D3CECD116AAADE134CF2A0ED1FE" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/DivestituresAndOtherTransactionsTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4D2F2E4C14DDA7BDF1B01A692742EE67" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CF3A4ABED8EFC2048151A69273B7B18" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4D2F2E4C14DDA7BDF1B01A692742EE67" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CF3A4ABED8EFC2048151A69273B7B18" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureAxis" xlink:label="loc_dd_TypeofDisclosureAxis_768C8C57EEA5A992950C1A69273E270C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CF3A4ABED8EFC2048151A69273B7B18" xlink:to="loc_dd_TypeofDisclosureAxis_768C8C57EEA5A992950C1A69273E270C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureDomain" xlink:label="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_TypeofDisclosureAxis_768C8C57EEA5A992950C1A69273E270C" xlink:to="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TypeofDisclosureDomain" xlink:label="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_TypeofDisclosureAxis_768C8C57EEA5A992950C1A69273E270C" xlink:to="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IncomeStatementMember" xlink:label="loc_dd_IncomeStatementMember_CB513E6A1A014FBB42601A69273EDFCF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98" xlink:to="loc_dd_IncomeStatementMember_CB513E6A1A014FBB42601A69273EDFCF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CashFlowMember" xlink:label="loc_dd_CashFlowMember_51C51A4CF395D685F40E1A692740C7E1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98" xlink:to="loc_dd_CashFlowMember_51C51A4CF395D685F40E1A692740C7E1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BalanceSheetMember" xlink:label="loc_dd_BalanceSheetMember_D107D30B5FEE8B9C6C261A692740F37F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_TypeofDisclosureDomain_13E85234D44C807EEA781A69273E4F98" xlink:to="loc_dd_BalanceSheetMember_D107D30B5FEE8B9C6C261A692740F37F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C48DBD1C8021FFCEFD3B1A692740AF5F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CF3A4ABED8EFC2048151A69273B7B18" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C48DBD1C8021FFCEFD3B1A692740AF5F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C48DBD1C8021FFCEFD3B1A692740AF5F" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_C48DBD1C8021FFCEFD3B1A692740AF5F" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ECPDisposalMember" xlink:label="loc_dd_ECPDisposalMember_84AC9295A51DA8B79E3F1A69274176FA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:to="loc_dd_ECPDisposalMember_84AC9295A51DA8B79E3F1A69274176FA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SpecialtyProductsDisposalMember" xlink:label="loc_dd_SpecialtyProductsDisposalMember_2FD6F37703E269A060671A6927412677" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:to="loc_dd_SpecialtyProductsDisposalMember_2FD6F37703E269A060671A6927412677" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DivestedAgBusinessMember" xlink:label="loc_dd_DivestedAgBusinessMember_095973E437F6BB7326061A692742FEC1" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:to="loc_dd_DivestedAgBusinessMember_095973E437F6BB7326061A692742FEC1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PerformanceChemicalsMember" xlink:label="loc_dd_PerformanceChemicalsMember_CD2D00EFDF2816E9FC6C1A69274200A4" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5CEE2F6AD9C9146158371A6927402B58" xlink:to="loc_dd_PerformanceChemicalsMember_CD2D00EFDF2816E9FC6C1A69274200A4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock" xlink:label="loc_us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_86680D8D2D1FEAB185CC1A6927422370" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4D2F2E4C14DDA7BDF1B01A692742EE67" xlink:to="loc_us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_86680D8D2D1FEAB185CC1A6927422370" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockEpsCalculationBasicDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockEpsCalculationDilutedDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockNetIncomeForEpsCalcBasicAndDilutedDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockScheduleOfEarningsPerShareBasicAndDilutedTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicLineItems" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_EB4430BECB128C3E2ADC394F457D06F7" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_59F6E1476B7B915443B7394F457BBD00" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_EB4430BECB128C3E2ADC394F457D06F7" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_59F6E1476B7B915443B7394F457BBD00" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_936D48B8349749ACE13F394F457CBC78" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_59F6E1476B7B915443B7394F457BBD00" xlink:to="loc_us-gaap_StatementClassOfStockAxis_936D48B8349749ACE13F394F457CBC78" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_2143325967811F513A57394F457D41F5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_936D48B8349749ACE13F394F457CBC78" xlink:to="loc_us-gaap_ClassOfStockDomain_2143325967811F513A57394F457D41F5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_2143325967811F513A57394F457D41F5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_936D48B8349749ACE13F394F457CBC78" xlink:to="loc_us-gaap_ClassOfStockDomain_2143325967811F513A57394F457D41F5" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockShareCountInformationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_79402E804C50D35F5A59393DE26DA306" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_79402E804C50D35F5A59393DE26DA306" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_6C7BD264D0EC046D861B3949713D5AA7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_79402E804C50D35F5A59393DE26DA306" xlink:to="loc_us-gaap_StatementClassOfStockAxis_6C7BD264D0EC046D861B3949713D5AA7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_B96E319D83DC728373023949713DFAF2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_6C7BD264D0EC046D861B3949713D5AA7" xlink:to="loc_us-gaap_ClassOfStockDomain_B96E319D83DC728373023949713DFAF2_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_B96E319D83DC728373023949713DFAF2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_6C7BD264D0EC046D861B3949713D5AA7" xlink:to="loc_us-gaap_ClassOfStockDomain_B96E319D83DC728373023949713DFAF2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_9E2DD5107C457ED55A003949963954CE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_B96E319D83DC728373023949713DFAF2" xlink:to="loc_us-gaap_CommonStockMember_9E2DD5107C457ED55A003949963954CE" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_CC91774C53E83D018508393DE26D5674" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_79402E804C50D35F5A59393DE26DA306" xlink:to="loc_dei_LegalEntityAxis_CC91774C53E83D018508393DE26D5674" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A5AA1D458EDEBEF8F9A4393DE26D2B42_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_CC91774C53E83D018508393DE26D5674" xlink:to="loc_dd_DuPontDomain_A5AA1D458EDEBEF8F9A4393DE26D2B42_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A5AA1D458EDEBEF8F9A4393DE26D2B42" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_CC91774C53E83D018508393DE26D5674" xlink:to="loc_dd_DuPontDomain_A5AA1D458EDEBEF8F9A4393DE26D2B42" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_7A969C2D2CB92E408650393DE26D0222" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_A5AA1D458EDEBEF8F9A4393DE26D2B42" xlink:to="loc_dd_CortevaMember_7A969C2D2CB92E408650393DE26D0222" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_7E999DF24F15CB161677393DE26DAC08" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_79402E804C50D35F5A59393DE26DA306" xlink:to="loc_dd_CompanyAxis_7E999DF24F15CB161677393DE26DAC08" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_67A65692A98B5B6C23FE393DE26D2A58_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_7E999DF24F15CB161677393DE26DAC08" xlink:to="loc_dd_CortevaDomain_67A65692A98B5B6C23FE393DE26D2A58_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_67A65692A98B5B6C23FE393DE26D2A58" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_7E999DF24F15CB161677393DE26DAC08" xlink:to="loc_dd_CortevaDomain_67A65692A98B5B6C23FE393DE26D2A58" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_BF89873BB91686EF6CDF393DE26D65DD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_67A65692A98B5B6C23FE393DE26D2A58" xlink:to="loc_dd_CortevaMember_BF89873BB91686EF6CDF393DE26D65DD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_FCFB726F53E74C30B6B6393DE26D1FA3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_us-gaap_CommonStockSharesIssued_FCFB726F53E74C30B6B6393DE26D1FA3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_C73538DE7FA114E26516393DE26DD709" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_C73538DE7FA114E26516393DE26DD709" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Dilutiveeffectofequitycompensationplans" xlink:label="loc_dd_Dilutiveeffectofequitycompensationplans_9DCC0B84034C56C34AD5393DE26DC061" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_dd_Dilutiveeffectofequitycompensationplans_9DCC0B84034C56C34AD5393DE26DC061" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_EB1BEFA0DF69C9667C42393DE26DA7A1" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_EB1BEFA0DF69C9667C42393DE26DA7A1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_StockoptionsandrestrictedstockunitsexcludedfromEPS" xlink:label="loc_dd_StockoptionsandrestrictedstockunitsexcludedfromEPS_BE036323F9A9ED881224393DE26D3BA6" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_dd_StockoptionsandrestrictedstockunitsexcludedfromEPS_BE036323F9A9ED881224393DE26D3BA6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_DB0048B447271A79EBDB393DE26DE429" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_DB0048B447271A79EBDB393DE26DE429" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Sharesinwhichvestingconditionsweremet" xlink:label="loc_dd_Sharesinwhichvestingconditionsweremet_D3AAD1BAD3BA49DA51E7393DE26D0547" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_380E2948C03020925DD8393DE26D62FD" xlink:to="loc_dd_Sharesinwhichvestingconditionsweremet_D3AAD1BAD3BA49DA51E7393DE26D0547" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EarningsPerShareOfCommonStockTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_6F119DB3DBB44C590F24394CC24A9B8F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_BF5970F941A11AA33A01394CC247A4C0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_6F119DB3DBB44C590F24394CC24A9B8F" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_BF5970F941A11AA33A01394CC247A4C0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6485AE5537FDE2B3DB83394CC248D7C9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_BF5970F941A11AA33A01394CC247A4C0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6485AE5537FDE2B3DB83394CC248D7C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AC34F569B6198FDBFB0E394CC2486E34_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6485AE5537FDE2B3DB83394CC248D7C9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AC34F569B6198FDBFB0E394CC2486E34_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AC34F569B6198FDBFB0E394CC2486E34" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6485AE5537FDE2B3DB83394CC248D7C9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_AC34F569B6198FDBFB0E394CC2486E34" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidBasisOfPresentationDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidBasisOfPresentationNotes" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_B2C56AD498E4A863B431F8823B34DB2B" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_422A120379C9507DE6FDF8823B337D42" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_B2C56AD498E4A863B431F8823B34DB2B" xlink:to="loc_us-gaap_StatementTable_422A120379C9507DE6FDF8823B337D42" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_653464484EA8B26490C7F8823B33ACB6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_422A120379C9507DE6FDF8823B337D42" xlink:to="loc_dei_LegalEntityAxis_653464484EA8B26490C7F8823B33ACB6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_C3451DAC28C61259FEBAF8823B344C8C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_653464484EA8B26490C7F8823B33ACB6" xlink:to="loc_dd_DuPontDomain_C3451DAC28C61259FEBAF8823B344C8C_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_C3451DAC28C61259FEBAF8823B344C8C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_653464484EA8B26490C7F8823B33ACB6" xlink:to="loc_dd_DuPontDomain_C3451DAC28C61259FEBAF8823B344C8C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_85599676BE3F47C2073EF8823B3499F0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_C3451DAC28C61259FEBAF8823B344C8C" xlink:to="loc_dd_EIDMember_85599676BE3F47C2073EF8823B3499F0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_4D5FF2DDE6815ABCE462F8823B358346" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B2C56AD498E4A863B431F8823B34DB2B" xlink:to="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_4D5FF2DDE6815ABCE462F8823B358346" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidIncomeTaxesGeographicAllocationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_B77043E0F9F1E19D21D8222773D8EB8D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_StatementTable_B77043E0F9F1E19D21D8222773D8EB8D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_B738EB6151E2881BF3B7222773DAF2B3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_B77043E0F9F1E19D21D8222773D8EB8D" xlink:to="loc_dei_LegalEntityAxis_B738EB6151E2881BF3B7222773DAF2B3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_919607C78E5B12846676222773DA97B2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_B738EB6151E2881BF3B7222773DAF2B3" xlink:to="loc_dd_DuPontDomain_919607C78E5B12846676222773DA97B2_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_919607C78E5B12846676222773DA97B2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_B738EB6151E2881BF3B7222773DAF2B3" xlink:to="loc_dd_DuPontDomain_919607C78E5B12846676222773DA97B2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_B0C12576C5B4425508D7222773DBE6ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_919607C78E5B12846676222773DA97B2" xlink:to="loc_dd_EIDMember_B0C12576C5B4425508D7222773DBE6ED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_8213C77E34F6349C1979222773DC4CBD" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_B77043E0F9F1E19D21D8222773D8EB8D" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_8213C77E34F6349C1979222773DC4CBD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_72B2B737AA569486F273222773DCB32D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_8213C77E34F6349C1979222773DC4CBD" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_72B2B737AA569486F273222773DCB32D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_72B2B737AA569486F273222773DCB32D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_8213C77E34F6349C1979222773DC4CBD" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_72B2B737AA569486F273222773DCB32D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_2DDAF9157546E1221C23222773DC2D77" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_72B2B737AA569486F273222773DCB32D" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_2DDAF9157546E1221C23222773DC2D77" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_E51DFFE35B5DB462904C222773DD9B3C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_E51DFFE35B5DB462904C222773DD9B3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_5E0B1AAEC46CA2AC1279222773DD2984" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_5E0B1AAEC46CA2AC1279222773DD2984" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_6E2F619E939031F6DC18222773DD8BDF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_6E2F619E939031F6DC18222773DD8BDF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_912F32690700A51867C1222773DD4A0A" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_912F32690700A51867C1222773DD4A0A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_B20072938EEE94DE2B10222773DD6EBD" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_B20072938EEE94DE2B10222773DD6EBD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_0990B8D045A1EC3BE550222773DE6E02" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_0990B8D045A1EC3BE550222773DE6E02" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_6CA9C7CC92873D362C42222773DE7782" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_6CA9C7CC92873D362C42222773DE7782" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_C0205BD9A42762AB28A9222773DE79BC" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_C0205BD9A42762AB28A9222773DE79BC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_CFDDE866D4F2B9CE3F22222773DE7E2E" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_CFDDE866D4F2B9CE3F22222773DE7E2E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_9864DC55F9D5499626A7222773DE2DD7" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_9864DC55F9D5499626A7222773DE2DD7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_6471E8BD258BFC9C1C09222773DF049A" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_6471E8BD258BFC9C1C09222773DF049A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_192074452211E1D2EE07222773DF7F51" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_192074452211E1D2EE07222773DF7F51" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_E70F6192625B7D266D37222773DF5DA5" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2C043582220D3C104D18222773DD6505" xlink:to="loc_us-gaap_ProfitLoss_E70F6192625B7D266D37222773DF5DA5" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidIncomeTaxesNotes" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_15E3AAF5EA37A39E3E5EF8823AF9AFE7" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_D3CC9032A438F7C61326F8823AF81E56" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_15E3AAF5EA37A39E3E5EF8823AF9AFE7" xlink:to="loc_us-gaap_StatementTable_D3CC9032A438F7C61326F8823AF81E56" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_92FD0FA7A58022207697F8823AF8E24E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_D3CC9032A438F7C61326F8823AF81E56" xlink:to="loc_dei_LegalEntityAxis_92FD0FA7A58022207697F8823AF8E24E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_4F16A146D351F0D719E7F8823AF82FC1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_92FD0FA7A58022207697F8823AF8E24E" xlink:to="loc_dd_DuPontDomain_4F16A146D351F0D719E7F8823AF82FC1_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_4F16A146D351F0D719E7F8823AF82FC1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_92FD0FA7A58022207697F8823AF8E24E" xlink:to="loc_dd_DuPontDomain_4F16A146D351F0D719E7F8823AF82FC1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_E5748A264FA6523F2181F8823AF8452A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_4F16A146D351F0D719E7F8823AF82FC1" xlink:to="loc_dd_EIDMember_E5748A264FA6523F2181F8823AF8452A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_0C9DE29F701988084DB5F8823AF915FE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_15E3AAF5EA37A39E3E5EF8823AF9AFE7" xlink:to="loc_us-gaap_IncomeTaxDisclosureTextBlock_0C9DE29F701988084DB5F8823AF915FE" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidIncomeTaxesRateReconciliationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_4C81209D0A22D7C11E1F307208B9D93B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_StatementTable_4C81209D0A22D7C11E1F307208B9D93B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_CCD89337DCAEF7BFCBB9307208BA5E1C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4C81209D0A22D7C11E1F307208B9D93B" xlink:to="loc_dei_LegalEntityAxis_CCD89337DCAEF7BFCBB9307208BA5E1C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_2FEA714FDEB89A56BB0C307208BAF3AC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_CCD89337DCAEF7BFCBB9307208BA5E1C" xlink:to="loc_dd_DuPontDomain_2FEA714FDEB89A56BB0C307208BAF3AC_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_2FEA714FDEB89A56BB0C307208BAF3AC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_CCD89337DCAEF7BFCBB9307208BA5E1C" xlink:to="loc_dd_DuPontDomain_2FEA714FDEB89A56BB0C307208BAF3AC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_56F510AC80E94042AEE9307208BAF1CF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_2FEA714FDEB89A56BB0C307208BAF3AC" xlink:to="loc_dd_EIDMember_56F510AC80E94042AEE9307208BAF1CF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_78DE7C5B7F2716BFA435307208BBBD4B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4C81209D0A22D7C11E1F307208B9D93B" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_78DE7C5B7F2716BFA435307208BBBD4B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_82FE4604C03852BAF6B0307208BB0B22_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_78DE7C5B7F2716BFA435307208BBBD4B" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_82FE4604C03852BAF6B0307208BB0B22_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_82FE4604C03852BAF6B0307208BB0B22" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_78DE7C5B7F2716BFA435307208BBBD4B" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_82FE4604C03852BAF6B0307208BB0B22" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_C0115E1E95BD0070D1A3307208BC0C6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_82FE4604C03852BAF6B0307208BB0B22" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_C0115E1E95BD0070D1A3307208BC0C6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_49022468674932DA4302307208BC8DCF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4C81209D0A22D7C11E1F307208B9D93B" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_49022468674932DA4302307208BC8DCF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_49022468674932DA4302307208BC8DCF" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_49022468674932DA4302307208BC8DCF" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RepatriationAccrualMember" xlink:label="loc_dd_RepatriationAccrualMember_45592A88903AD5242623307208C207FD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:to="loc_dd_RepatriationAccrualMember_45592A88903AD5242623307208C207FD" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxchargebenefitrelatedtoTheActMember" xlink:label="loc_dd_TaxchargebenefitrelatedtoTheActMember_8794BA502D6ED6636E7A307208C2AA01" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:to="loc_dd_TaxchargebenefitrelatedtoTheActMember_8794BA502D6ED6636E7A307208C2AA01" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SwissTaxReformMember" xlink:label="loc_dd_SwissTaxReformMember_02FE2D92354AC3BD628D307208C33A69" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:to="loc_dd_SwissTaxReformMember_02FE2D92354AC3BD628D307208C33A69" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedinterestreversalsMember" xlink:label="loc_dd_AccruedinterestreversalsMember_F549A55506AC6F56B986307208C3808C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:to="loc_dd_AccruedinterestreversalsMember_F549A55506AC6F56B986307208C3808C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BrazilValuationAllowanceMember" xlink:label="loc_dd_BrazilValuationAllowanceMember_BBA31C76B1EA9525A5F7307208C36ED3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_0023D60B62E4CDFFCAEC307208BCB433" xlink:to="loc_dd_BrazilValuationAllowanceMember_BBA31C76B1EA9525A5F7307208C36ED3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_F202C8BEE5262429A436307208C37588" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_F202C8BEE5262429A436307208C37588" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary_19560A86005956480313307208C4DA9C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary_19560A86005956480313307208C4DA9C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_4EC4E59BF1EB5716C65F307208C4A586" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_4EC4E59BF1EB5716C65F307208C4A586" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent_4DE3F84FEFCEACC94C80307208C41A51" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent_4DE3F84FEFCEACC94C80307208C41A51" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_CA6CA193873945560E37307208C483A5" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_CA6CA193873945560E37307208C483A5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent_613BAD4AA81E718CA0E1307208C5BF12" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent_613BAD4AA81E718CA0E1307208C5BF12" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage_E7209558221A2BDFC4B0307208C5066C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage_E7209558221A2BDFC4B0307208C5066C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent_BB7876232C7581E5F229307208C53A87" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent_BB7876232C7581E5F229307208C53A87" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_86B0E37B5AF2DEFAFBA2307208C50582" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_86B0E37B5AF2DEFAFBA2307208C50582" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_C802BA6D53511FCB8164307208C5A562" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_C802BA6D53511FCB8164307208C5A562" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_7F8B340AD3BE5B6602D2307208C5A816" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_7F8B340AD3BE5B6602D2307208C5A816" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_A743EA4A16576FF81576307208C684B6" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_A743EA4A16576FF81576307208C684B6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_184BF82BB109E5E532DD307208C602DF" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_184BF82BB109E5E532DD307208C602DF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:label="loc_us-gaap_OtherTaxExpenseBenefit_EA5520A78F5723E6D523307208C65C83" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_us-gaap_OtherTaxExpenseBenefit_EA5520A78F5723E6D523307208C65C83" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations" xlink:label="loc_dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations_F47BAEF846112C1E9411307208C754B8" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_27EED42174103C086A6D307208C33C7C" xlink:to="loc_dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations_F47BAEF846112C1E9411307208C754B8" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidIncomeTaxesTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_FEAF2AD204AAF13B2F20F8823AEF0218" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_268FE75E8B2473811A2DF8823AEE0AA8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_FEAF2AD204AAF13B2F20F8823AEF0218" xlink:to="loc_us-gaap_StatementTable_268FE75E8B2473811A2DF8823AEE0AA8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_9CE34D34FEA14BC4E661F8823AEEBED4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_268FE75E8B2473811A2DF8823AEE0AA8" xlink:to="loc_dei_LegalEntityAxis_9CE34D34FEA14BC4E661F8823AEEBED4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A2DDABE66E7C547B2348F8823AEE7749_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9CE34D34FEA14BC4E661F8823AEEBED4" xlink:to="loc_dd_DuPontDomain_A2DDABE66E7C547B2348F8823AEE7749_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A2DDABE66E7C547B2348F8823AEE7749" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9CE34D34FEA14BC4E661F8823AEEBED4" xlink:to="loc_dd_DuPontDomain_A2DDABE66E7C547B2348F8823AEE7749" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_52E30DD03932ED7C1B7CF8823AEEAE31" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_A2DDABE66E7C547B2348F8823AEE7749" xlink:to="loc_dd_EIDMember_52E30DD03932ED7C1B7CF8823AEEAE31" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_BB6E57151730A760FC13F8823AEF21B6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_FEAF2AD204AAF13B2F20F8823AEF0218" xlink:to="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_BB6E57151730A760FC13F8823AEF21B6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_663672AC54B47D050220F8823AEF6A70" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_FEAF2AD204AAF13B2F20F8823AEF0218" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_663672AC54B47D050220F8823AEF6A70" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidQuarterlyFnDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectOfFourthQuarterEventsLineItems" xlink:label="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_2BFAA8F3BBC24445E954F8823A2A2C78" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable" xlink:label="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_D499AE8C4D59402B2C72F8823A292870" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_2BFAA8F3BBC24445E954F8823A2A2C78" xlink:to="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_D499AE8C4D59402B2C72F8823A292870" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_2FA7A94A5E03E7949AABF8823A297C12" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_D499AE8C4D59402B2C72F8823A292870" xlink:to="loc_dei_LegalEntityAxis_2FA7A94A5E03E7949AABF8823A297C12" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_04416863B22A097C424FF8823A2A0FC8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_2FA7A94A5E03E7949AABF8823A297C12" xlink:to="loc_dd_DuPontDomain_04416863B22A097C424FF8823A2A0FC8_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_04416863B22A097C424FF8823A2A0FC8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_2FA7A94A5E03E7949AABF8823A297C12" xlink:to="loc_dd_DuPontDomain_04416863B22A097C424FF8823A2A0FC8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_C66E245C25E132F6B234F8823A2AEEDC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_04416863B22A097C424FF8823A2A0FC8" xlink:to="loc_dd_EIDMember_C66E245C25E132F6B234F8823A2AEEDC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_0A99FF1DDB68C035DAD0F8823A2A318E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_2BFAA8F3BBC24445E954F8823A2A2C78" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_0A99FF1DDB68C035DAD0F8823A2A318E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8718EA942A077FF4ED56F8823A2BF0FC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_2BFAA8F3BBC24445E954F8823A2A2C78" xlink:to="loc_us-gaap_NetIncomeLoss_8718EA942A077FF4ED56F8823A2BF0FC" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidQuarterlyFnNotes" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_23C1F9FC92D9A53C8610F8823A455488" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_3E6A866B792B0654F257F8823A4449C5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_23C1F9FC92D9A53C8610F8823A455488" xlink:to="loc_us-gaap_StatementTable_3E6A866B792B0654F257F8823A4449C5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_390272A83921E2B15051F8823A44B60B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_3E6A866B792B0654F257F8823A4449C5" xlink:to="loc_dei_LegalEntityAxis_390272A83921E2B15051F8823A44B60B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A21ED72160964603E8C9F8823A45380A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_390272A83921E2B15051F8823A44B60B" xlink:to="loc_dd_DuPontDomain_A21ED72160964603E8C9F8823A45380A_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A21ED72160964603E8C9F8823A45380A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_390272A83921E2B15051F8823A44B60B" xlink:to="loc_dd_DuPontDomain_A21ED72160964603E8C9F8823A45380A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_533D6E9E36098C4E62E7F8823A45D75F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_A21ED72160964603E8C9F8823A45380A" xlink:to="loc_dd_EIDMember_533D6E9E36098C4E62E7F8823A45D75F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_506C78666608CEB864C5F8823A453A94" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_23C1F9FC92D9A53C8610F8823A455488" xlink:to="loc_us-gaap_QuarterlyFinancialInformationTextBlock_506C78666608CEB864C5F8823A453A94" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidQuarterlyFnReconciliationsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_D56871D267262D4EB01CF8823A1E772E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_3C29B249090A88141B12F8823A15FDAF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_D56871D267262D4EB01CF8823A1E772E" xlink:to="loc_us-gaap_StatementTable_3C29B249090A88141B12F8823A15FDAF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationAxis" xlink:label="loc_dd_CommoncontrolcombinationAxis_86829E49B8987577D21FF8823A16884B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_3C29B249090A88141B12F8823A15FDAF" xlink:to="loc_dd_CommoncontrolcombinationAxis_86829E49B8987577D21FF8823A16884B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CommoncontrolcombinationAxis_86829E49B8987577D21FF8823A16884B" xlink:to="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CommoncontrolcombinationAxis_86829E49B8987577D21FF8823A16884B" xlink:to="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HistoricalEIDMember" xlink:label="loc_dd_HistoricalEIDMember_D57FD74F4308754F0F43F8823A1CA432" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03" xlink:to="loc_dd_HistoricalEIDMember_D57FD74F4308754F0F43F8823A1CA432" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DiscontinuedOperationsandOtherAdjustmentsMember" xlink:label="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_3EF94E8BF934412F6DADF8823A1DB84F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03" xlink:to="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_3EF94E8BF934412F6DADF8823A1DB84F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASMember" xlink:label="loc_dd_DASMember_DBDC307D1E5C33F52F06F8823A1D840F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_38D372161CE9CE20F8E2F8823A17CB03" xlink:to="loc_dd_DASMember_DBDC307D1E5C33F52F06F8823A1D840F" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_142BD4F3EB8CD7589EB8F8823A1DDFE7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_3C29B249090A88141B12F8823A15FDAF" xlink:to="loc_dei_LegalEntityAxis_142BD4F3EB8CD7589EB8F8823A1DDFE7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9BE82CE7F810A017B021F8823A1EE1B9_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_142BD4F3EB8CD7589EB8F8823A1DDFE7" xlink:to="loc_dd_DuPontDomain_9BE82CE7F810A017B021F8823A1EE1B9_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_9BE82CE7F810A017B021F8823A1EE1B9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_142BD4F3EB8CD7589EB8F8823A1DDFE7" xlink:to="loc_dd_DuPontDomain_9BE82CE7F810A017B021F8823A1EE1B9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_7E022673A373C1F0EC5CF8823A1EF99A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_9BE82CE7F810A017B021F8823A1EE1B9" xlink:to="loc_dd_EIDMember_7E022673A373C1F0EC5CF8823A1EF99A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_2475151F79FE59D4CCCEF8823A1E4045" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_D56871D267262D4EB01CF8823A1E772E" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_2475151F79FE59D4CCCEF8823A1E4045" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_D3FA5DF414BA0A2E81BDF8823A1F92C6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_D56871D267262D4EB01CF8823A1E772E" xlink:to="loc_us-gaap_NetIncomeLoss_D3FA5DF414BA0A2E81BDF8823A1F92C6" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidQuarterlyFnTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_2F5A9217444D2454DA18F8823A3B5D03" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_60C17E0FB5D8686A5B68F8823A39F465" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_2F5A9217444D2454DA18F8823A3B5D03" xlink:to="loc_us-gaap_StatementTable_60C17E0FB5D8686A5B68F8823A39F465" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_08509990BD4191498D2DF8823A395B7B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_60C17E0FB5D8686A5B68F8823A39F465" xlink:to="loc_srt_RestatementAxis_08509990BD4191498D2DF8823A395B7B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_B4895E73566824C4AE07F8823A3A7B65_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_08509990BD4191498D2DF8823A395B7B" xlink:to="loc_srt_RestatementDomain_B4895E73566824C4AE07F8823A3A7B65_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_B4895E73566824C4AE07F8823A3A7B65" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_08509990BD4191498D2DF8823A395B7B" xlink:to="loc_srt_RestatementDomain_B4895E73566824C4AE07F8823A3A7B65" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_57DCB18A9049DD750881F8823A3A9617" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_60C17E0FB5D8686A5B68F8823A39F465" xlink:to="loc_dei_LegalEntityAxis_57DCB18A9049DD750881F8823A3A9617" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F9EE7FE3D75148ABCEE6F8823A3AA089_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_57DCB18A9049DD750881F8823A3A9617" xlink:to="loc_dd_DuPontDomain_F9EE7FE3D75148ABCEE6F8823A3AA089_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F9EE7FE3D75148ABCEE6F8823A3AA089" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_57DCB18A9049DD750881F8823A3A9617" xlink:to="loc_dd_DuPontDomain_F9EE7FE3D75148ABCEE6F8823A3AA089" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_22840436A534F72B3729F8823A3ACC50" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_F9EE7FE3D75148ABCEE6F8823A3AA089" xlink:to="loc_dd_EIDMember_22840436A534F72B3729F8823A3ACC50" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_DC351101372B8AA559F2F8823A3B4ED0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2F5A9217444D2454DA18F8823A3B5D03" xlink:to="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_DC351101372B8AA559F2F8823A3B4ED0" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidRelatedPartyDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_AF7BC601DEAB8BA3887515BABAFD2221" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_AF7BC601DEAB8BA3887515BABAFD2221" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_C5CD55763207427BDB5615BABAFD56B3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_AF7BC601DEAB8BA3887515BABAFD2221" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_C5CD55763207427BDB5615BABAFD56B3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C5CD55763207427BDB5615BABAFD56B3" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C5CD55763207427BDB5615BABAFD56B3" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_2EA8046FB1D3BC77109615BABB0C0DB0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_2EA8046FB1D3BC77109615BABB0C0DB0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_57659EAF9698AD6537F715BABB0C45A2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8CE82DC5A762632F811115BABB0CBA65" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_57659EAF9698AD6537F715BABB0C45A2" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_82718C4A64565695B1BF15BABB0C543C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_AF7BC601DEAB8BA3887515BABAFD2221" xlink:to="loc_dei_LegalEntityAxis_82718C4A64565695B1BF15BABB0C543C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_7302E9B99C3DFE616F3E15BABB0C216F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_82718C4A64565695B1BF15BABB0C543C" xlink:to="loc_dd_DuPontDomain_7302E9B99C3DFE616F3E15BABB0C216F_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_7302E9B99C3DFE616F3E15BABB0C216F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_82718C4A64565695B1BF15BABB0C543C" xlink:to="loc_dd_DuPontDomain_7302E9B99C3DFE616F3E15BABB0C216F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_9672635995C99F68642D15BABB0C4F3D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_7302E9B99C3DFE616F3E15BABB0C216F" xlink:to="loc_dd_EIDMember_9672635995C99F68642D15BABB0C4F3D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_B19C43E95BA2154C927615BABB0CF634" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_AF7BC601DEAB8BA3887515BABAFD2221" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_B19C43E95BA2154C927615BABB0CF634" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_3BA5E5811C0D2EEA509F15BABB0CA6C7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_B19C43E95BA2154C927615BABB0CF634" xlink:to="loc_us-gaap_RelatedPartyDomain_3BA5E5811C0D2EEA509F15BABB0CA6C7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_3BA5E5811C0D2EEA509F15BABB0CA6C7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_B19C43E95BA2154C927615BABB0CF634" xlink:to="loc_us-gaap_RelatedPartyDomain_3BA5E5811C0D2EEA509F15BABB0CA6C7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_C8ACCE5C0A9D5D9595F115BABB0C477F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_3BA5E5811C0D2EEA509F15BABB0CA6C7" xlink:to="loc_dd_CortevaMember_C8ACCE5C0A9D5D9595F115BABB0C477F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableRelatedPartiesNoncurrent" xlink:label="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_55E8BC9DD7168ED130FD15BABB0CF7E3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:to="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_55E8BC9DD7168ED130FD15BABB0CF7E3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_C05B4578ED4464F8A25915BABB0CCE10" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_C05B4578ED4464F8A25915BABB0CCE10" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseRelatedParty" xlink:label="loc_us-gaap_InterestExpenseRelatedParty_3AA709884319D9C038DD15BABB0CF512" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:to="loc_us-gaap_InterestExpenseRelatedParty_3AA709884319D9C038DD15BABB0CF512" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_IndemnifiedLiabilities" xlink:label="loc_dd_IndemnifiedLiabilities_9BC9DD3240714E0EC0AA15BABB0CB097" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_DCA18E0FDF5601E3605815BABB0C6697" xlink:to="loc_dd_IndemnifiedLiabilities_9BC9DD3240714E0EC0AA15BABB0CB097" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidRelatedPartyNotes" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_9C73EB76DED62E217256F8823B2268AE" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_47527783B185F7DBC616F8823B21FFA8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9C73EB76DED62E217256F8823B2268AE" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_47527783B185F7DBC616F8823B21FFA8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_5BBC8CE1DED9EA19930EF8823B22B56D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_47527783B185F7DBC616F8823B21FFA8" xlink:to="loc_dei_LegalEntityAxis_5BBC8CE1DED9EA19930EF8823B22B56D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_ABE01DCC95F64504D557F8823B227EE8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5BBC8CE1DED9EA19930EF8823B22B56D" xlink:to="loc_dd_DuPontDomain_ABE01DCC95F64504D557F8823B227EE8_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_ABE01DCC95F64504D557F8823B227EE8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5BBC8CE1DED9EA19930EF8823B22B56D" xlink:to="loc_dd_DuPontDomain_ABE01DCC95F64504D557F8823B227EE8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_F056F98431A951C18D75F8823B222239" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_ABE01DCC95F64504D557F8823B227EE8" xlink:to="loc_dd_EIDMember_F056F98431A951C18D75F8823B222239" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_09DBBDF01512620C508EF8823B23CE3A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_9C73EB76DED62E217256F8823B2268AE" xlink:to="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_09DBBDF01512620C508EF8823B23CE3A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidRelatedPartyTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidSegmentFnNotes" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_6BBF345A19C6F9F14770F8823A8E6218" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2E94715A115340EC8B62F8823A8D27A1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBF345A19C6F9F14770F8823A8E6218" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2E94715A115340EC8B62F8823A8D27A1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_82FB987596314FCEAE30F8823A8DDF7C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2E94715A115340EC8B62F8823A8D27A1" xlink:to="loc_dei_LegalEntityAxis_82FB987596314FCEAE30F8823A8DDF7C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_C40D3C9390074D9CCBA3F8823A8E10B1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_82FB987596314FCEAE30F8823A8DDF7C" xlink:to="loc_dd_DuPontDomain_C40D3C9390074D9CCBA3F8823A8E10B1_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_C40D3C9390074D9CCBA3F8823A8E10B1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_82FB987596314FCEAE30F8823A8DDF7C" xlink:to="loc_dd_DuPontDomain_C40D3C9390074D9CCBA3F8823A8E10B1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_15AC5149A2B3FED9D8C2F8823A8E0547" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_C40D3C9390074D9CCBA3F8823A8E10B1" xlink:to="loc_dd_EIDMember_15AC5149A2B3FED9D8C2F8823A8E0547" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_3715DDED41B3649E3CEAF8823A8F994A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBF345A19C6F9F14770F8823A8E6218" xlink:to="loc_us-gaap_SegmentReportingDisclosureTextBlock_3715DDED41B3649E3CEAF8823A8F994A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidSegmentFnSegmentReconciliationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:label="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_BCF9A0605AB3E0CE93783095E7B8EAE8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:to="loc_dei_LegalEntityAxis_BCF9A0605AB3E0CE93783095E7B8EAE8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_27C53B79E45F25480C7F3095E7B9D858_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_BCF9A0605AB3E0CE93783095E7B8EAE8" xlink:to="loc_dd_DuPontDomain_27C53B79E45F25480C7F3095E7B9D858_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_27C53B79E45F25480C7F3095E7B9D858" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_BCF9A0605AB3E0CE93783095E7B8EAE8" xlink:to="loc_dd_DuPontDomain_27C53B79E45F25480C7F3095E7B9D858" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_71BE7832067C520D3AA43095E7B9E890" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_27C53B79E45F25480C7F3095E7B9D858" xlink:to="loc_dd_EIDMember_71BE7832067C520D3AA43095E7B9E890" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_B3CD8E09158A522FD0183095E7B9B9B2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:to="loc_srt_StatementScenarioAxis_B3CD8E09158A522FD0183095E7B9B9B2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3B844664B5C9FB2A704F3095E7B9D90B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_B3CD8E09158A522FD0183095E7B9B9B2" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3B844664B5C9FB2A704F3095E7B9D90B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3B844664B5C9FB2A704F3095E7B9D90B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_B3CD8E09158A522FD0183095E7B9B9B2" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3B844664B5C9FB2A704F3095E7B9D90B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_D9757C74F7F8C6DBD2A03095E7BA2C9D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_3B844664B5C9FB2A704F3095E7B9D90B" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_D9757C74F7F8C6DBD2A03095E7BA2C9D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_92A700583D93C6D2C4093095E7BA33ED" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_92A700583D93C6D2C4093095E7BA33ED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_AE525E76DE741098B8BD3095E7BA6A77_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_92A700583D93C6D2C4093095E7BA33ED" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_AE525E76DE741098B8BD3095E7BA6A77_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_AE525E76DE741098B8BD3095E7BA6A77" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_92A700583D93C6D2C4093095E7BA33ED" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_AE525E76DE741098B8BD3095E7BA6A77" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_F36E429C49C540E61B123095E7BB65D4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_AE525E76DE741098B8BD3095E7BA6A77" xlink:to="loc_dd_HedgingProgramMember_F36E429C49C540E61B123095E7BB65D4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_34C27BBD6733A71ECF903095E7BB2F8C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_6027186BC68E4C16D1C93095E7B842CE" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_34C27BBD6733A71ECF903095E7BB2F8C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_34C27BBD6733A71ECF903095E7BB2F8C" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_34C27BBD6733A71ECF903095E7BB2F8C" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_F3D658F8285EA05BCF063095E7BB210B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF" xlink:to="loc_dd_ArgentinepesodevaluationMember_F3D658F8285EA05BCF063095E7BB210B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_D26F5A63DA8F4B3319BB3095E7BC8BEA" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_33808CA66F82620F90E93095E7BBA7AF" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_D26F5A63DA8F4B3319BB3095E7BC8BEA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1441AA12B2025E01AD773095E7BC55C9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_1441AA12B2025E01AD773095E7BC55C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_9E1A58775F668E675BD33095E7BCCBC4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_9E1A58775F668E675BD33095E7BCCBC4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_B32193A59B5560FF49903095E7BDD3AF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_B32193A59B5560FF49903095E7BDD3AF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_B73919A5DAB6A57BC8D03095E7BDE24C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_B73919A5DAB6A57BC8D03095E7BDE24C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaap_InterestIncomeOperating_2E8D58CA47E76A1AB6DA3095E7BD8F0E" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_InterestIncomeOperating_2E8D58CA47E76A1AB6DA3095E7BD8F0E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_B05A6490BEDA863642DF3095E7BD3D69" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_InterestAndDebtExpense_B05A6490BEDA863642DF3095E7BD3D69" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_1DF1C7F89C80DCA4CDF33095E7BDF45D" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_1DF1C7F89C80DCA4CDF33095E7BDF45D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Nonoperatingbenefitscostsnet" xlink:label="loc_dd_Nonoperatingbenefitscostsnet_322697AFC89CA40FFE223095E7BD2FBA" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_dd_Nonoperatingbenefitscostsnet_322697AFC89CA40FFE223095E7BD2FBA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_1B66394981E21ADF73673095E7BEFF60" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_1B66394981E21ADF73673095E7BEFF60" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentReportingInformationOtherBenefitCharge" xlink:label="loc_dd_SegmentReportingInformationOtherBenefitCharge_46C86DAE524C6CF75E993095E7BE539D" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_dd_SegmentReportingInformationOtherBenefitCharge_46C86DAE524C6CF75E993095E7BE539D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Proformaadjustments" xlink:label="loc_dd_Proformaadjustments_A8DC66C7582EE1716BC53095E7BE0879" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_dd_Proformaadjustments_A8DC66C7582EE1716BC53095E7BE0879" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentReportingReconcilingItemCorporateExpenses" xlink:label="loc_dd_SegmentReportingReconcilingItemCorporateExpenses_AB96C060824AB9B82DBE3095E7BE1B29" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_dd_SegmentReportingReconcilingItemCorporateExpenses_AB96C060824AB9B82DBE3095E7BE1B29" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentoperatingEBITDA" xlink:label="loc_dd_SegmentoperatingEBITDA_D0DA6E4C1F49F779ACAC3095E7BE4ADE" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_ADCCB4624BB75C72EAB43095E7BCF122" xlink:to="loc_dd_SegmentoperatingEBITDA_D0DA6E4C1F49F779ACAC3095E7BE4ADE" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/EidSegmentFnTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingAssetReconcilingItemLineItems" xlink:label="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_3EAF13C7647E9D3D92BC1BAA2FFC0635" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable" xlink:label="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_16B417E58965D8DDAAB31BAA2FF6067C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_3EAF13C7647E9D3D92BC1BAA2FFC0635" xlink:to="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_16B417E58965D8DDAAB31BAA2FF6067C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_6C83EDE29B58A91E6EB61BAA2FFB32D3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTable_16B417E58965D8DDAAB31BAA2FF6067C" xlink:to="loc_dei_LegalEntityAxis_6C83EDE29B58A91E6EB61BAA2FFB32D3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F0E6D13D7366EDDC1F4B1BAA2FFB04AF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6C83EDE29B58A91E6EB61BAA2FFB32D3" xlink:to="loc_dd_DuPontDomain_F0E6D13D7366EDDC1F4B1BAA2FFB04AF_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_F0E6D13D7366EDDC1F4B1BAA2FFB04AF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6C83EDE29B58A91E6EB61BAA2FFB32D3" xlink:to="loc_dd_DuPontDomain_F0E6D13D7366EDDC1F4B1BAA2FFB04AF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_2A439EBF301111675D2E1BAA2FFB3811" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_F0E6D13D7366EDDC1F4B1BAA2FFB04AF" xlink:to="loc_dd_EIDMember_2A439EBF301111675D2E1BAA2FFB3811" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock_34065184AB9C809439B11BAA2FFD1ABC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingAssetReconcilingItemLineItems_3EAF13C7647E9D3D92BC1BAA2FFC0635" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock_34065184AB9C809439B11BAA2FFD1ABC" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FairValueMeasurements" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/FairValueMeasurementsFairValueMeasurementNonrecurringBasisDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_268DB856A13B1EBB39E739D07B27029E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_268DB856A13B1EBB39E739D07B27029E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_AE8398B7C6826D1E355939D07B2858A7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_268DB856A13B1EBB39E739D07B27029E" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_AE8398B7C6826D1E355939D07B2858A7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1C0248DE740D327A489839D07B28FAA2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_AE8398B7C6826D1E355939D07B2858A7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1C0248DE740D327A489839D07B28FAA2_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1C0248DE740D327A489839D07B28FAA2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_AE8398B7C6826D1E355939D07B2858A7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1C0248DE740D327A489839D07B28FAA2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_542B5F4A3091A82B62AA39D07B28D82B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_1C0248DE740D327A489839D07B28FAA2" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_542B5F4A3091A82B62AA39D07B28D82B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_69C649C69B29437B213F39D07B295B66" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_268DB856A13B1EBB39E739D07B27029E" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_69C649C69B29437B213F39D07B295B66" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_73DF1E78694C7EC3BE7239D07B2903B8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_69C649C69B29437B213F39D07B295B66" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_73DF1E78694C7EC3BE7239D07B2903B8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_73DF1E78694C7EC3BE7239D07B2903B8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_69C649C69B29437B213F39D07B295B66" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_73DF1E78694C7EC3BE7239D07B2903B8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_4B0C486602A2CC63EE0D39D07B298559" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_73DF1E78694C7EC3BE7239D07B2903B8" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_4B0C486602A2CC63EE0D39D07B298559" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis" xlink:label="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_538519FAEECF7C033A6439D07B29B6A3" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_268DB856A13B1EBB39E739D07B27029E" xlink:to="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_538519FAEECF7C033A6439D07B29B6A3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_538519FAEECF7C033A6439D07B29B6A3" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_538519FAEECF7C033A6439D07B29B6A3" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_C5AB1C8C164DF973D4C839E57311119F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_C5AB1C8C164DF973D4C839E57311119F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_BA53F52269A073B1203539E57311056D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_BA53F52269A073B1203539E57311056D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InProcessResearchAndDevelopmentMember" xlink:label="loc_us-gaap_InProcessResearchAndDevelopmentMember_6E5D61F33AC6FC0300EB39E57311B127" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_58F02DDDF0F8F8624BD839E57308A729" xlink:to="loc_us-gaap_InProcessResearchAndDevelopmentMember_6E5D61F33AC6FC0300EB39E57311B127" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_E17BB968766114D6E07F39D07B2B0BAE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_E17BB968766114D6E07F39D07B2B0BAE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_us-gaap_AssetImpairmentCharges_3B36CDFE09093BDD948C39D07B2BC005" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_AssetImpairmentCharges_3B36CDFE09093BDD948C39D07B2BC005" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillFairValueDisclosure" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillFairValueDisclosure_2E97443D858FA4D6311139D07B2BB622" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillFairValueDisclosure_2E97443D858FA4D6311139D07B2BB622" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_08C46170C5D76AB58A0B39D07B2BDFBD" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_08C46170C5D76AB58A0B39D07B2BDFBD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure" xlink:label="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_330A0A191BABB2CC4AD739D07B2C46E3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_330A0A191BABB2CC4AD739D07B2C46E3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_567E279D75AC031E418E39D07B2C7E20" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4F3930F31E321A117E7439D07B2B6877" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_567E279D75AC031E418E39D07B2C7E20" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FairValueMeasurementsFairValueMeasurementRecurringBasisDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract" xlink:label="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable" xlink:label="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable_758260CC0A3E8C2A70C23072545A03AA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable_758260CC0A3E8C2A70C23072545A03AA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C67D7CA531092EFCD01B3072545B38BA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable_758260CC0A3E8C2A70C23072545A03AA" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C67D7CA531092EFCD01B3072545B38BA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_66AB647412C57262B64C3072545CF25E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C67D7CA531092EFCD01B3072545B38BA" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_66AB647412C57262B64C3072545CF25E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_66AB647412C57262B64C3072545CF25E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_C67D7CA531092EFCD01B3072545B38BA" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_66AB647412C57262B64C3072545CF25E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_97977931E81CB0B312273072545D857C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_66AB647412C57262B64C3072545CF25E" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_97977931E81CB0B312273072545D857C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1989C65F3A5C0D51E9B93072545FCBFC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable_758260CC0A3E8C2A70C23072545A03AA" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1989C65F3A5C0D51E9B93072545FCBFC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_68419EE25FF8895F99643072545FDA23_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1989C65F3A5C0D51E9B93072545FCBFC" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_68419EE25FF8895F99643072545FDA23_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_68419EE25FF8895F99643072545FDA23" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1989C65F3A5C0D51E9B93072545FCBFC" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_68419EE25FF8895F99643072545FDA23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_E1D8A0F742478AC3A8D330725460F54E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_68419EE25FF8895F99643072545FDA23" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_E1D8A0F742478AC3A8D330725460F54E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_9D0490AE40BD6DE3BE9C3072545D5023" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsTable_758260CC0A3E8C2A70C23072545A03AA" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_9D0490AE40BD6DE3BE9C3072545D5023" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_177492E5ECE4257457F13072545E2BAD_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_9D0490AE40BD6DE3BE9C3072545D5023" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_177492E5ECE4257457F13072545E2BAD_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_177492E5ECE4257457F13072545E2BAD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_9D0490AE40BD6DE3BE9C3072545D5023" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_177492E5ECE4257457F13072545E2BAD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_170743752F68BB275C9E3072545F8B02" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_177492E5ECE4257457F13072545E2BAD" xlink:to="loc_us-gaap_ForeignExchangeContractMember_170743752F68BB275C9E3072545F8B02" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Cashcashequivalentsandrestrictedcashequivalentsfairvaluedisclosure" xlink:label="loc_dd_Cashcashequivalentsandrestrictedcashequivalentsfairvaluedisclosure_A57D06D584B8942267F8307254647500" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_dd_Cashcashequivalentsandrestrictedcashequivalentsfairvaluedisclosure_A57D06D584B8942267F8307254647500" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ShortTermInvestmentsFairValueDisclosure" xlink:label="loc_dd_ShortTermInvestmentsFairValueDisclosure_1D6499516B619AABB9AD3072546573E8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_dd_ShortTermInvestmentsFairValueDisclosure_1D6499516B619AABB9AD3072546573E8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_E9367B856CB181BA82E5307254652139" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_E9367B856CB181BA82E5307254652139" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_D17C092912F631C51C4A307254659BC5" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_D17C092912F631C51C4A307254659BC5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_1F073A09FB0DFFA0A53130725465813D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_LongTermDebtFairValue_1F073A09FB0DFFA0A53130725465813D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_318BB5ABB76E638F3400307254662867" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_318BB5ABB76E638F3400307254662867" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_825F4F2E33597B22D6BC307254665979" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_EBDEE8BE06CCEA0A41B63072546351F5" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_825F4F2E33597B22D6BC307254665979" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FairValueMeasurementsTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstruments" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsCashFlowHedgesIncludedInAociDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2155FFC80503DA51C9633F11C55FE1D1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2155FFC80503DA51C9633F11C55FE1D1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_B37E4B071F6B7CB72DF83F11C5618C8F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2155FFC80503DA51C9633F11C55FE1D1" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_B37E4B071F6B7CB72DF83F11C5618C8F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_E1957E215781B992422D3F11C56115A5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_B37E4B071F6B7CB72DF83F11C5618C8F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E1957E215781B992422D3F11C56115A5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_E1957E215781B992422D3F11C56115A5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_B37E4B071F6B7CB72DF83F11C5618C8F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E1957E215781B992422D3F11C56115A5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember_B854072E7393AD18ECFB3F11C56213E2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E1957E215781B992422D3F11C56115A5" xlink:to="loc_us-gaap_CashFlowHedgingMember_B854072E7393AD18ECFB3F11C56213E2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_16387099F293349AC38F3F11C56082F3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2155FFC80503DA51C9633F11C55FE1D1" xlink:to="loc_srt_StatementScenarioAxis_16387099F293349AC38F3F11C56082F3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_E1C6B7A70D8CCEED48903F11C560188F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_16387099F293349AC38F3F11C56082F3" xlink:to="loc_srt_ScenarioUnspecifiedDomain_E1C6B7A70D8CCEED48903F11C560188F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_E1C6B7A70D8CCEED48903F11C560188F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_16387099F293349AC38F3F11C56082F3" xlink:to="loc_srt_ScenarioUnspecifiedDomain_E1C6B7A70D8CCEED48903F11C560188F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_DF5C61E2D3C1A8CD5E693F11C5613590" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_E1C6B7A70D8CCEED48903F11C560188F" xlink:to="loc_dd_SuccessorPeriodMember_DF5C61E2D3C1A8CD5E693F11C5613590" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeRemainingMaturity1" xlink:label="loc_us-gaap_DerivativeRemainingMaturity1_48C3744DAA519066A9573F11C562AEF5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_DerivativeRemainingMaturity1_48C3744DAA519066A9573F11C562AEF5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet" xlink:label="loc_us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_9CED0FAC270DE658E1773F11C563FBCC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_9CED0FAC270DE658E1773F11C563FBCC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_D78EB6BA3C6CA5D100253F11C56415C4" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_D78EB6BA3C6CA5D100253F11C56415C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_AAC99DB7C0E20C441E5B3F11C5641D13" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_AAC99DB7C0E20C441E5B3F11C5641D13" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths" xlink:label="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_4198E90880DBB984E35F3F11C565F593" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_BF8AEDCCD9CBFB0D43DA3F11C5620B38" xlink:to="loc_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_4198E90880DBB984E35F3F11C565F593" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsEffectOfDerivativeInstrumentsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_2BA44EF6081DFC1BD8BA3F11C6405958" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_2BA44EF6081DFC1BD8BA3F11C6405958" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2BA44EF6081DFC1BD8BA3F11C6405958" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_2BA44EF6081DFC1BD8BA3F11C6405958" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="loc_us-gaap_CommodityContractMember_82A964B0A13EDBE68CEB3F11C641BD6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5" xlink:to="loc_us-gaap_CommodityContractMember_82A964B0A13EDBE68CEB3F11C641BD6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_C592C497FBD8CA38AA793F11C640AB3C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01F8CDEECFB5B924EA613F11C6406FF5" xlink:to="loc_us-gaap_ForeignExchangeContractMember_C592C497FBD8CA38AA793F11C640AB3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_B45E1818C955352DE5553F11C6416F3C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_B45E1818C955352DE5553F11C6416F3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_B45E1818C955352DE5553F11C6416F3C" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_B45E1818C955352DE5553F11C6416F3C" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfSalesMember" xlink:label="loc_us-gaap_CostOfSalesMember_E63464D1D596DAAAC07E3F11C642F258" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F" xlink:to="loc_us-gaap_CostOfSalesMember_E63464D1D596DAAAC07E3F11C642F258" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpenseMember" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_92E122284E4EBA2E48F73F11C643237A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_A77A199DBE6B26DE6A593F11C641242F" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseMember_92E122284E4EBA2E48F73F11C643237A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_FA7F5E2F51CC37D5B0343F11C6437A18" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:to="loc_us-gaap_HedgingDesignationAxis_FA7F5E2F51CC37D5B0343F11C6437A18" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_FA7F5E2F51CC37D5B0343F11C6437A18" xlink:to="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_FA7F5E2F51CC37D5B0343F11C6437A18" xlink:to="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_703809673459A16ADBB93F11C644CB54" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_703809673459A16ADBB93F11C644CB54" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_452813DC6932C170C2B73F11C644D55D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_3CDFC6BEA39C9E457A7D3F11C643FE21" xlink:to="loc_us-gaap_NondesignatedMember_452813DC6932C170C2B73F11C644D55D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7B0FEC5C42D5335B3CBD3F11C64429FE" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_100D8A37D967591C0DC23F11C63F69B4" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7B0FEC5C42D5335B3CBD3F11C64429FE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain_C05EF368C70F7005DA673F11C6444E9C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7B0FEC5C42D5335B3CBD3F11C64429FE" xlink:to="loc_us-gaap_HedgingRelationshipDomain_C05EF368C70F7005DA673F11C6444E9C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain_C05EF368C70F7005DA673F11C6444E9C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7B0FEC5C42D5335B3CBD3F11C64429FE" xlink:to="loc_us-gaap_HedgingRelationshipDomain_C05EF368C70F7005DA673F11C6444E9C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember_AD556EA06120CF015BF33F11C645ED08" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_C05EF368C70F7005DA673F11C6444E9C" xlink:to="loc_us-gaap_CashFlowHedgingMember_AD556EA06120CF015BF33F11C645ED08" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_C5C0EA82F244D776D8C63F11C6463132" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_C5C0EA82F244D776D8C63F11C6463132" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_4F03A2BEC2E02134088E3F11C6463B9D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_4F03A2BEC2E02134088E3F11C6463B9D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_3DA1584A107F63A7403D3F11C64629DD" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_3DA1584A107F63A7403D3F11C64629DD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_0F79E6D21A9E53AA3A4E3F11C6466803" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_68CA0FA0BD0959E387CB3F11C64541BB" xlink:to="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_0F79E6D21A9E53AA3A4E3F11C6466803" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsFairValueOfDerivativesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6A794971DA24E1FD0C863F11C658DAB2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6A794971DA24E1FD0C863F11C658DAB2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_45262CEF9AD27FED86323F11C65AFF3C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6A794971DA24E1FD0C863F11C658DAB2" xlink:to="loc_us-gaap_HedgingDesignationAxis_45262CEF9AD27FED86323F11C65AFF3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_6A4CEFE41E8487C5A6953F11C65AE50D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_45262CEF9AD27FED86323F11C65AFF3C" xlink:to="loc_us-gaap_HedgingDesignationDomain_6A4CEFE41E8487C5A6953F11C65AE50D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_6A4CEFE41E8487C5A6953F11C65AE50D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_45262CEF9AD27FED86323F11C65AFF3C" xlink:to="loc_us-gaap_HedgingDesignationDomain_6A4CEFE41E8487C5A6953F11C65AE50D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_4AE6EC90BA649AC3EEE63F11C65AB67C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_6A4CEFE41E8487C5A6953F11C65AE50D" xlink:to="loc_us-gaap_NondesignatedMember_4AE6EC90BA649AC3EEE63F11C65AB67C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_731273C3D3D65331E5673F11C65B6317" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6A794971DA24E1FD0C863F11C658DAB2" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_731273C3D3D65331E5673F11C65B6317" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_D67C1DD18E05C9024AFD3F11C65B8978_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_731273C3D3D65331E5673F11C65B6317" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_D67C1DD18E05C9024AFD3F11C65B8978_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_D67C1DD18E05C9024AFD3F11C65B8978" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_731273C3D3D65331E5673F11C65B6317" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_D67C1DD18E05C9024AFD3F11C65B8978" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_E2FF0188FC78CD6EF4143F11C65BA9A2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_D67C1DD18E05C9024AFD3F11C65B8978" xlink:to="loc_us-gaap_ForeignExchangeContractMember_E2FF0188FC78CD6EF4143F11C65BA9A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_C38C3DF5C177C8A52B643F11C6588779" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6A794971DA24E1FD0C863F11C658DAB2" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_C38C3DF5C177C8A52B643F11C6588779" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C38C3DF5C177C8A52B643F11C6588779" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C38C3DF5C177C8A52B643F11C6588779" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_F3EB30D69440E70365C23F11C6593E16" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_F3EB30D69440E70365C23F11C6593E16" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_1CADAF65114A33E8AADA3F11C659E12C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_DE7D799A5BE07A6351F63F11C658F337" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_1CADAF65114A33E8AADA3F11C659E12C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_7191F1D5125111AC96023F11C65C0B75" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement_7191F1D5125111AC96023F11C65C0B75" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset_F7FC7AE43853B54F3B803F11C65C4E6C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset_F7FC7AE43853B54F3B803F11C65C4E6C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_A8D30FB454CB061E93A63F11C65CFF22" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeAssets_A8D30FB454CB061E93A63F11C65CFF22" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_F17176988154EBA20BE53F11C65D64A9" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement_F17176988154EBA20BE53F11C65D64A9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset_8056BCEDE361802FB88B3F11C65D837D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset_8056BCEDE361802FB88B3F11C65D837D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_6A28BF3DCFDB58FEE7CB3F11C65D19E1" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_ECD8E3D76590EB0F86143F11C65B7BCF" xlink:to="loc_us-gaap_DerivativeLiabilities_6A28BF3DCFDB58FEE7CB3F11C65D19E1" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsFinancialInstrumentsNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_A82DDF411DFB2A0695873F11C3A0F29C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3F76EB5867D788FCED0F3F11C39ED18B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_A82DDF411DFB2A0695873F11C3A0F29C" xlink:to="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3F76EB5867D788FCED0F3F11C39ED18B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_0625220C2D40643ECADC3F11C39FEFD2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3F76EB5867D788FCED0F3F11C39ED18B" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_0625220C2D40643ECADC3F11C39FEFD2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0625220C2D40643ECADC3F11C39FEFD2" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0625220C2D40643ECADC3F11C39FEFD2" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="loc_us-gaap_CashEquivalentsMember_72FBD5D8D0FE24E11E553F11C3A08CA7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924" xlink:to="loc_us-gaap_CashEquivalentsMember_72FBD5D8D0FE24E11E553F11C3A08CA7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_MarketableSecuritiesMember" xlink:label="loc_dd_MarketableSecuritiesMember_9DCEAC185F956E3F09AA3F11C3A00126" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_A2A2A94872FFDB884AC83F11C39FB924" xlink:to="loc_dd_MarketableSecuritiesMember_9DCEAC185F956E3F09AA3F11C3A00126" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_us-gaap_HeldToMaturitySecurities_1351C30E6DEA2FA613B33F11C3A084AD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_A82DDF411DFB2A0695873F11C3A0F29C" xlink:to="loc_us-gaap_HeldToMaturitySecurities_1351C30E6DEA2FA613B33F11C3A084AD" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsNotionalAmountsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_DFD15040163A05C01AAD3F11C636234C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_588B107DDEA9B196CE4C3F11C6335FDA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_DFD15040163A05C01AAD3F11C636234C" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_588B107DDEA9B196CE4C3F11C6335FDA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_F341B924508F6991D7653F11C63487A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_588B107DDEA9B196CE4C3F11C6335FDA" xlink:to="loc_us-gaap_HedgingDesignationAxis_F341B924508F6991D7653F11C63487A8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_F341B924508F6991D7653F11C63487A8" xlink:to="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_F341B924508F6991D7653F11C63487A8" xlink:to="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_87063239C0DF718819E73F11C6347565" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_87063239C0DF718819E73F11C6347565" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_F75C77DCC14D4CDDE2733F11C635D4C8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_22F18C19B33B6742168B3F11C6349AF7" xlink:to="loc_us-gaap_NondesignatedMember_F75C77DCC14D4CDDE2733F11C635D4C8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_3459452AB35A56EC8B4A3F11C6352B13" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_588B107DDEA9B196CE4C3F11C6335FDA" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_3459452AB35A56EC8B4A3F11C6352B13" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3459452AB35A56EC8B4A3F11C6352B13" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3459452AB35A56EC8B4A3F11C6352B13" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="loc_us-gaap_CommodityContractMember_AE18B7C6DD01386895B83F11C6361237" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4" xlink:to="loc_us-gaap_CommodityContractMember_AE18B7C6DD01386895B83F11C6361237" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_7B0972180A0340E2F6F23F11C635A2FC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_908604256CBB23E20ECA3F11C6351CD4" xlink:to="loc_us-gaap_ForeignExchangeContractMember_7B0972180A0340E2F6F23F11C635A2FC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="loc_us-gaap_DerivativeNotionalAmount_C5AC62EA05C7F0B868F73F11C636D0D5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_DFD15040163A05C01AAD3F11C636234C" xlink:to="loc_us-gaap_DerivativeNotionalAmount_C5AC62EA05C7F0B868F73F11C636D0D5" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/FinancialInstrumentsTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/GeographicInformation" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/GeographicInformationNetPropertyByCountryDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8080B9334B7C29C2AB80F8823BC591D1" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4DD85DFB3182F94074AF8823BC328C4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8080B9334B7C29C2AB80F8823BC591D1" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4DD85DFB3182F94074AF8823BC328C4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_11B2EBF5CF97C09220C4F8823BC3B8B9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4DD85DFB3182F94074AF8823BC328C4" xlink:to="loc_srt_StatementGeographicalAxis_11B2EBF5CF97C09220C4F8823BC3B8B9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_11B2EBF5CF97C09220C4F8823BC3B8B9" xlink:to="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_11B2EBF5CF97C09220C4F8823BC3B8B9" xlink:to="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_583ABD88E20FEDCF0D21F8823BC4C21B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:to="loc_country_US_583ABD88E20FEDCF0D21F8823BC4C21B" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CA" xlink:label="loc_country_CA_53A377664F6EBE17DDDAF8823BC48C68" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:to="loc_country_CA_53A377664F6EBE17DDDAF8823BC48C68" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EMEAMember" xlink:label="loc_us-gaap_EMEAMember_E4BA38284B641B9682AFF8823BC4D9BF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:to="loc_us-gaap_EMEAMember_E4BA38284B641B9682AFF8823BC4D9BF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AsiaPacificMember" xlink:label="loc_srt_AsiaPacificMember_9276466A146D4A3C0F9EF8823BC47A05" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:to="loc_srt_AsiaPacificMember_9276466A146D4A3C0F9EF8823BC47A05" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LatinAmericaMember" xlink:label="loc_srt_LatinAmericaMember_8502AA4771BA97FEBF2DF8823BC5D840" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FAEB4EE8D6CDD221AEC7F8823BC3FBCF" xlink:to="loc_srt_LatinAmericaMember_8502AA4771BA97FEBF2DF8823BC5D840" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_E96A4D8A61A5BBB90D19F8823BC52027" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8080B9334B7C29C2AB80F8823BC591D1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_E96A4D8A61A5BBB90D19F8823BC52027" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/GeographicInformationRevenueByCountryDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_7F4704DF93ED578793FB1BB5DB3B5481" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_2EC58B04CB9E36D3600F1BB5DB39D3B7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_7F4704DF93ED578793FB1BB5DB3B5481" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_2EC58B04CB9E36D3600F1BB5DB39D3B7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_41BF385025936FEEA7141BB5DB396A6C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_2EC58B04CB9E36D3600F1BB5DB39D3B7" xlink:to="loc_srt_StatementGeographicalAxis_41BF385025936FEEA7141BB5DB396A6C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_41BF385025936FEEA7141BB5DB396A6C" xlink:to="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_41BF385025936FEEA7141BB5DB396A6C" xlink:to="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_E252753EF219019ED4CA1BB5DB3A92A0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_country_US_E252753EF219019ED4CA1BB5DB3A92A0" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CA" xlink:label="loc_country_CA_90485F8B344C83B18E831BB5DB3A17E3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_country_CA_90485F8B344C83B18E831BB5DB3A17E3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EMEAMember" xlink:label="loc_us-gaap_EMEAMember_DE9BC0175AA170EC765F1BB5DB3A6833" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_us-gaap_EMEAMember_DE9BC0175AA170EC765F1BB5DB3A6833" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AsiaPacificMember" xlink:label="loc_srt_AsiaPacificMember_F4B988501CA52625213E1BB5DB3B1F6D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_srt_AsiaPacificMember_F4B988501CA52625213E1BB5DB3B1F6D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LatinAmericaMember" xlink:label="loc_srt_LatinAmericaMember_3CCFBF896E2C623E553F1BB5DB3B3237" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_srt_LatinAmericaMember_3CCFBF896E2C623E553F1BB5DB3B3237" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_BR" xlink:label="loc_country_BR_4BEA7E020CA0FF3AD5941BB5DB3B577F" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_FA9636B54C321CEF6D131BB5DB3A526D" xlink:to="loc_country_BR_4BEA7E020CA0FF3AD5941BB5DB3B577F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_160254162EAF0D7277D71BB5DB3B112B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_7F4704DF93ED578793FB1BB5DB3B5481" xlink:to="loc_us-gaap_Revenues_160254162EAF0D7277D71BB5DB3B112B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GeographicInformationThreshold" xlink:label="loc_dd_GeographicInformationThreshold_7AED7E34FE2FB41B48E31BB5DB3C5E6E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_7F4704DF93ED578793FB1BB5DB3B5481" xlink:to="loc_dd_GeographicInformationThreshold_7AED7E34FE2FB41B48E31BB5DB3C5E6E" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/GeographicInformationTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssets" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsAmortizationExpenseDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7EEC00A4422B58CD41DE3F794F9A159B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7EEC00A4422B58CD41DE3F794F9A159B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B06DD95E1E64A460D3D63F794F9A5439" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7EEC00A4422B58CD41DE3F794F9A159B" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B06DD95E1E64A460D3D63F794F9A5439" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F5C529BDEDDA731CF69C3F794F9A89D5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B06DD95E1E64A460D3D63F794F9A5439" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F5C529BDEDDA731CF69C3F794F9A89D5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F5C529BDEDDA731CF69C3F794F9A89D5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B06DD95E1E64A460D3D63F794F9A5439" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F5C529BDEDDA731CF69C3F794F9A89D5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GermplasmMember" xlink:label="loc_dd_GermplasmMember_F72130D8DC4B531F184B3F794F9BA9F9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F5C529BDEDDA731CF69C3F794F9A89D5" xlink:to="loc_dd_GermplasmMember_F72130D8DC4B531F184B3F794F9BA9F9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_65EE84E03D210C3C51EE3F794F9B3535" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_7EEC00A4422B58CD41DE3F794F9A159B" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_65EE84E03D210C3C51EE3F794F9B3535" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_37CCF529070474D0F4C53F794F9B23D1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_65EE84E03D210C3C51EE3F794F9B3535" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_37CCF529070474D0F4C53F794F9B23D1_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_37CCF529070474D0F4C53F794F9B23D1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_65EE84E03D210C3C51EE3F794F9B3535" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_37CCF529070474D0F4C53F794F9B23D1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_E46BD61D4E0B7BF7C2AE3F794F9B162B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_37CCF529070474D0F4C53F794F9B23D1" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_E46BD61D4E0B7BF7C2AE3F794F9B162B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_26EE28AED6A2754972963F794F9CBE5C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_26EE28AED6A2754972963F794F9CBE5C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E05F4B79774C67457C873F794F9D61A2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_E05F4B79774C67457C873F794F9D61A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9D096B3A0CCC632204A63F794F9C325E" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9D096B3A0CCC632204A63F794F9C325E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_3B313017E454B8C9EC113F794F9C52EA" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_3B313017E454B8C9EC113F794F9C52EA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_9A033DA2FA2174D014FD3F794F9CB867" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_9A033DA2FA2174D014FD3F794F9CB867" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_BC74DC6D13257DF273CE3F794F9DA645" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_1481A84D202EEECDDCD13F794F9CB763" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_BC74DC6D13257DF273CE3F794F9DA645" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsGoodwillBySegmentDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_B1C69B8E2FB19E98D93D3F794F8BBBB7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_B1C69B8E2FB19E98D93D3F794F8BBBB7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis_90B5C421CAD961A1657E3FD1E76F5427" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_B1C69B8E2FB19E98D93D3F794F8BBBB7" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis_90B5C421CAD961A1657E3FD1E76F5427" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionNameDomain" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionNameDomain_608D9894E2285C5908C03FD376D1AD68_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis_90B5C421CAD961A1657E3FD1E76F5427" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionNameDomain_608D9894E2285C5908C03FD376D1AD68_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionNameDomain" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionNameDomain_608D9894E2285C5908C03FD376D1AD68" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis_90B5C421CAD961A1657E3FD1E76F5427" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionNameDomain_608D9894E2285C5908C03FD376D1AD68" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GoodwillImpairmentMember" xlink:label="loc_dd_GoodwillImpairmentMember_BE86BE499F96A56DD16D3FD29E32F103" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionNameDomain_608D9894E2285C5908C03FD376D1AD68" xlink:to="loc_dd_GoodwillImpairmentMember_BE86BE499F96A56DD16D3FD29E32F103" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_0F83F77877B17ECDEACD3F794F8C8F60" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_B1C69B8E2FB19E98D93D3F794F8BBBB7" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_0F83F77877B17ECDEACD3F794F8C8F60" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0F83F77877B17ECDEACD3F794F8C8F60" xlink:to="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0F83F77877B17ECDEACD3F794F8C8F60" xlink:to="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AgricultureMember" xlink:label="loc_dd_AgricultureMember_B399CC7551D9D46A59473F794F8C2BAE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7" xlink:to="loc_dd_AgricultureMember_B399CC7551D9D46A59473F794F8C2BAE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_3EAF5F025106874D1A543F794F8D3E99" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7" xlink:to="loc_dd_CropProtectionMember_3EAF5F025106874D1A543F794F8D3E99" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_7BA755712333D7C5787A3F794F8D2F57" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_981C68D405A3C15C7B8F3F794F8C8DB7" xlink:to="loc_dd_SeedMember_7BA755712333D7C5787A3F794F8D2F57" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_48478FD1C2DE76DAB8723F794F8E50CC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_Goodwill_48478FD1C2DE76DAB8723F794F8E50CC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_47E2E4D89B8050E688163F794F8E42F2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_47E2E4D89B8050E688163F794F8E42F2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_854940FE438A0FE316333F794F8E1BFE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_854940FE438A0FE316333F794F8E1BFE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_CFF3B99933873857F6C13F794F8DA03F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_CFF3B99933873857F6C13F794F8DA03F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillOtherIncreaseDecrease" xlink:label="loc_us-gaap_GoodwillOtherIncreaseDecrease_30775FC325E178E679FF3F794F8EB5E2" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_us-gaap_GoodwillOtherIncreaseDecrease_30775FC325E178E679FF3F794F8EB5E2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Segmentrealignment" xlink:label="loc_dd_Segmentrealignment_485A514328FA9D73B8133F794F8E291D" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4F5CEEB6D6CB8533B5263F794F8D3341" xlink:to="loc_dd_Segmentrealignment_485A514328FA9D73B8133F794F8E291D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_7E27AB98AFEC6C4D69813F794DBC133C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_7E27AB98AFEC6C4D69813F794DBC133C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1E1AB50E74956CBF2DB23F794DBE1A26" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_7E27AB98AFEC6C4D69813F794DBC133C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1E1AB50E74956CBF2DB23F794DBE1A26" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1E1AB50E74956CBF2DB23F794DBE1A26" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1E1AB50E74956CBF2DB23F794DBE1A26" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GermplasmMember" xlink:label="loc_dd_GermplasmMember_5396B0CEB6202A4787953F794DBEBF2D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_dd_GermplasmMember_5396B0CEB6202A4787953F794DBEBF2D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelatedIntangibleAssetsMember" xlink:label="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_548CA729805A62BD7FF03F794DBE33C0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_us-gaap_CustomerRelatedIntangibleAssetsMember_548CA729805A62BD7FF03F794DBE33C0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_39664697E38E5D53BF993F794DBFF55E" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_39664697E38E5D53BF993F794DBFF55E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_4AB9E2A89D1914826AAF3F794DBFC52F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_4AB9E2A89D1914826AAF3F794DBFC52F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FavorableSupplyContractMember" xlink:label="loc_dd_FavorableSupplyContractMember_9F5DF2ABBD71C49159873F794DBFAD68" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_dd_FavorableSupplyContractMember_9F5DF2ABBD71C49159873F794DBFAD68" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_82D605769013CD60DBC23F794DC0A56A" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_EE05B78ABC403BE20E4A3F794DBE813E" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_82D605769013CD60DBC23F794DC0A56A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_7F96A4A1F2F267F4D0173F794DC00BCE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_7E27AB98AFEC6C4D69813F794DBC133C" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_7F96A4A1F2F267F4D0173F794DC00BCE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_7F96A4A1F2F267F4D0173F794DC00BCE" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_7F96A4A1F2F267F4D0173F794DC00BCE" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InProcessResearchAndDevelopmentMember" xlink:label="loc_us-gaap_InProcessResearchAndDevelopmentMember_BBDFCDAFF252275B63CE3F794DC1BEA3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:to="loc_us-gaap_InProcessResearchAndDevelopmentMember_BBDFCDAFF252275B63CE3F794DC1BEA3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_GermplasmMember" xlink:label="loc_dd_GermplasmMember_C2BF1C8455249CA3E1673F794DC1907B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:to="loc_dd_GermplasmMember_C2BF1C8455249CA3E1673F794DC1907B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_F581A83836BC8E4B64573F794DC18CDF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_F581A83836BC8E4B64573F794DC18CDF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_2502F4BC40DEC0F4FB073F794DC0AD03" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_739ED171CE77C3EE18FA3F794DC0CEC8" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_2502F4BC40DEC0F4FB073F794DC0AD03" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_654D7CE37B690C6B460D3F794DC2FBC9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_654D7CE37B690C6B460D3F794DC2FBC9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1BC27ADB6CC311F766283F794DC2F628" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1BC27ADB6CC311F766283F794DC2F628" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0022D19D603AEDD9891D3F794DC327F3" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0022D19D603AEDD9891D3F794DC327F3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_CC057FD61E3FE4D77F273F794DC3B4EE" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_CC057FD61E3FE4D77F273F794DC3B4EE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_E64D551515B52B1616F23F794DC3A6E3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_E64D551515B52B1616F23F794DC3A6E3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_53C5279402D47F4C49903F794DC4B8B1" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_53C5279402D47F4C49903F794DC4B8B1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_9BDB8533B11EFC017C0D3F794DC2285C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_9BDB8533B11EFC017C0D3F794DC2285C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax" xlink:label="loc_dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax_6EF50A4BF2F1334A04983F794DC454E1" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_41D6607470BDF817C3F83F794DC23A0A" xlink:to="loc_dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax_6EF50A4BF2F1334A04983F794DC454E1" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/GoodwillAndOtherIntangibleAssetsTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesDeferredTaxBalancesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowanceLineItems" xlink:label="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowanceTable" xlink:label="loc_us-gaap_ValuationAllowanceTable_793C58289E3EDADB3F6F205DEFCA49DA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:to="loc_us-gaap_ValuationAllowanceTable_793C58289E3EDADB3F6F205DEFCA49DA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_F94A01E53A25AC857F90205DEFCB11EF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_793C58289E3EDADB3F6F205DEFCA49DA" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_F94A01E53A25AC857F90205DEFCB11EF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_F94A01E53A25AC857F90205DEFCB11EF" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_F94A01E53A25AC857F90205DEFCB11EF" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SwissVAMember" xlink:label="loc_dd_SwissVAMember_600061F486EE07640AC6205DEFCCCDDA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB" xlink:to="loc_dd_SwissVAMember_600061F486EE07640AC6205DEFCCCDDA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BrazilValuationAllowanceMember" xlink:label="loc_dd_BrazilValuationAllowanceMember_D8BCBF87C112CC75F30B205DEFCBEC77" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_81D2E802004948AC869F205DEFCBBBAB" xlink:to="loc_dd_BrazilValuationAllowanceMember_D8BCBF87C112CC75F30B205DEFCBEC77" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards" xlink:label="loc_dd_DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards_6E8C99462163FA2ECE47205DEFCCA4E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_dd_DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards_6E8C99462163FA2ECE47205DEFCCA4E4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_3AD6AE2C055144DBE973205DEFCD0C5D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_3AD6AE2C055144DBE973205DEFCD0C5D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther_45F1727F2E94C463AD37205DEFCD0976" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther_45F1727F2E94C463AD37205DEFCD0976" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:label="loc_us-gaap_DeferredTaxAssetsInventory_591E72E674E251E00BFE205DEFCD7E58" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsInventory_591E72E674E251E00BFE205DEFCD7E58" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeferredTaxAssetsLongTermDebt" xlink:label="loc_dd_DeferredTaxAssetsLongTermDebt_92BF2E37BBD1ABC76318205DEFCD4BDB" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_dd_DeferredTaxAssetsLongTermDebt_92BF2E37BBD1ABC76318205DEFCD4BDB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsInvestments" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestments_5EED9F7E27ADE544DB49205DEFCDA3D8" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestments_5EED9F7E27ADE544DB49205DEFCDA3D8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_D84A3BB15FD13209A3C9205DEFCE5360" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_D84A3BB15FD13209A3C9205DEFCE5360" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_7C6233B6E0624DE5ED7D205DEFCE15CF" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_7C6233B6E0624DE5ED7D205DEFCE15CF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_340E0C04089265862727205DEFCEE8DB" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_340E0C04089265862727205DEFCEE8DB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_52B0FF6CBBC0F81EBC3D205DEFCE7F18" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_6F32085D1FD747C5E04D205DEFCCAB36" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_52B0FF6CBBC0F81EBC3D205DEFCE7F18" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_199B906D8E525914C834205DEFCFADD3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_199B906D8E525914C834205DEFCFADD3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_2EDC453F3ADD53ECA3B4205DEFD0E1A9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_2EDC453F3ADD53ECA3B4205DEFD0E1A9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts_8EA7721CB50F63A3454B205DEFD05BA8" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts_8EA7721CB50F63A3454B205DEFD05BA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_6DB91FC63BB8174418A3205DEFD05BC3" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_6DB91FC63BB8174418A3205DEFD05BC3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_8B195D33624109549883205DEFD13343" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_08D3A7D64F93C9FD9BD2205DEFCE0DA5" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_8B195D33624109549883205DEFD13343" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities_BD64C78D7A710CB531BB205DEFD1F809" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:to="loc_us-gaap_DeferredTaxLiabilities_BD64C78D7A710CB531BB205DEFD1F809" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:label="loc_us-gaap_OtherTaxExpenseBenefit_DC06418D6438C0B4918D205DEFD12B9D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_8FADD0176924729BDF42205DEFCCD93F" xlink:to="loc_us-gaap_OtherTaxExpenseBenefit_DC06418D6438C0B4918D205DEFD12B9D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesGeographicAllocationOfIncomeAndProvisionForIncomeTaxesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_58A35197605CB1430F1C2227B735CCD1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_StatementTable_58A35197605CB1430F1C2227B735CCD1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_286910E30761C1BDE3C12227B735DE04" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_58A35197605CB1430F1C2227B735CCD1" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_286910E30761C1BDE3C12227B735DE04" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_D33EFF98066901575B292227B73582D0_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_286910E30761C1BDE3C12227B735DE04" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_D33EFF98066901575B292227B73582D0_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_D33EFF98066901575B292227B73582D0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_286910E30761C1BDE3C12227B735DE04" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_D33EFF98066901575B292227B73582D0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_464A0576794CB95378AC2227B735D251" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_D33EFF98066901575B292227B73582D0" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_464A0576794CB95378AC2227B735D251" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_1F745D2625A98F03EA692227B73508D0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_1F745D2625A98F03EA692227B73508D0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_81609B1B0D44B84288542227B7357E51" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_81609B1B0D44B84288542227B7357E51" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_43884F461235D5670E242227B735C4F5" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_43884F461235D5670E242227B735C4F5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_5665908ADF9B3017A80D2227B735E212" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_5665908ADF9B3017A80D2227B735E212" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_74CA9AAFE4B721408AC82227B7354443" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_74CA9AAFE4B721408AC82227B7354443" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_01B33AD4FC4CEB8AA6732227B735DD07" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_01B33AD4FC4CEB8AA6732227B735DD07" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_327F8FED708BDB44EDB42227B7354514" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_327F8FED708BDB44EDB42227B7354514" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_3CC49851B48EC9790A742227B7352FCA" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_3CC49851B48EC9790A742227B7352FCA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_687AFDC2D51A6E658D482227B73533D7" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_687AFDC2D51A6E658D482227B73533D7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_11B732F56EA281DEEAB82227B73584AB" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_11B732F56EA281DEEAB82227B73584AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_CF725D0DEE6C34AD4F952227B735E676" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_CF725D0DEE6C34AD4F952227B735E676" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_2A6C5D2023B6FCE5AC5F2227B735DB0D" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_2A6C5D2023B6FCE5AC5F2227B735DB0D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_4775EA2D568DCB2A4E512227B7350040" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7684AEB3F6E76080ED5D2227B7358C1E" xlink:to="loc_us-gaap_ProfitLoss_4775EA2D568DCB2A4E512227B7350040" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesGrossUnrecognizedTaxBenefitsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxContingencyTable" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_D61BF01E911808D5DE6516627CEAC561" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_D61BF01E911808D5DE6516627CEAC561" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_02A22DF2E74ED09B6C8316627CEA5D9E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_D61BF01E911808D5DE6516627CEAC561" xlink:to="loc_srt_RestatementAxis_02A22DF2E74ED09B6C8316627CEA5D9E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_AC64428BD5370056673A16627CEB219A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_02A22DF2E74ED09B6C8316627CEA5D9E" xlink:to="loc_srt_RestatementDomain_AC64428BD5370056673A16627CEB219A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_AC64428BD5370056673A16627CEB219A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_02A22DF2E74ED09B6C8316627CEA5D9E" xlink:to="loc_srt_RestatementDomain_AC64428BD5370056673A16627CEB219A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_73C8A0A82BC041005EAB16627CEB3995" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_AC64428BD5370056673A16627CEB219A" xlink:to="loc_dd_SuccessorPeriodMember_73C8A0A82BC041005EAB16627CEB3995" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_BC5A1999AF39A7CBB6AA16627CEB417A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_BC5A1999AF39A7CBB6AA16627CEB417A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_17612E4C5CDD8469459316627CECDB71" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_17612E4C5CDD8469459316627CECDB71" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_6AF7D4C0F9759F4772D616627CEC1A79" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_6AF7D4C0F9759F4772D616627CEC1A79" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_D21E5DB5F12BAB22B8A716627CEC3349" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_D21E5DB5F12BAB22B8A716627CEC3349" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_05CE4E16BCC5B8F7282E16627CECC7A5" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_05CE4E16BCC5B8F7282E16627CECC7A5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_UnrecognizedTaxBenefitsImpactofInternalReorganizations" xlink:label="loc_dd_UnrecognizedTaxBenefitsImpactofInternalReorganizations_30E844CD88AC961EBA84172867F798D4" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_dd_UnrecognizedTaxBenefitsImpactofInternalReorganizations_30E844CD88AC961EBA84172867F798D4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_D485000F1750BC695EA416627CEC45FF" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_D485000F1750BC695EA416627CEC45FF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation_CC44B91F53423CFC900D16627CED0B01" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation_CC44B91F53423CFC900D16627CED0B01" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_39189AA7EB4EBD6B4ABA16627CED297D" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_39189AA7EB4EBD6B4ABA16627CED297D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_046F8BB479D0CBD35FF516627CED32A0" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_046F8BB479D0CBD35FF516627CED32A0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_8022DF136280070085F416627CEDBA33" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_1DE0B14F5F476CC5BF2E16627CEBED8F" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_8022DF136280070085F416627CEDBA33" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_5F782519B32F1A85D5DB205DEFF4B641" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_5F782519B32F1A85D5DB205DEFF4B641" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_77C1A9F01CBCE0DEDAF0205DEFF554D6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_5F782519B32F1A85D5DB205DEFF4B641" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_77C1A9F01CBCE0DEDAF0205DEFF554D6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_E9C7F3485F8CE980E7DA205DEFF5BE28_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_77C1A9F01CBCE0DEDAF0205DEFF554D6" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_E9C7F3485F8CE980E7DA205DEFF5BE28_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_E9C7F3485F8CE980E7DA205DEFF5BE28" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_77C1A9F01CBCE0DEDAF0205DEFF554D6" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_E9C7F3485F8CE980E7DA205DEFF5BE28" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PensionResizeMember" xlink:label="loc_dd_PensionResizeMember_A3B32AD714B03CA378CB205DEFF5C9EF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_E9C7F3485F8CE980E7DA205DEFF5BE28" xlink:to="loc_dd_PensionResizeMember_A3B32AD714B03CA378CB205DEFF5C9EF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit_11E35C54C34EE426A660205DEFF72EA8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:to="loc_us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit_11E35C54C34EE426A660205DEFF72EA8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxCutsandJobsActof2017IncompleteAccountingTransitionTaxforAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit" xlink:label="loc_dd_TaxCutsandJobsActof2017IncompleteAccountingTransitionTaxforAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit_BE784D83923FD45849CB205DEFF73057" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:to="loc_dd_TaxCutsandJobsActof2017IncompleteAccountingTransitionTaxforAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit_BE784D83923FD45849CB205DEFF73057" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxCutsandJobsActof2017IndirectImpactonInventoryIncomeTaxExpense" xlink:label="loc_dd_TaxCutsandJobsActof2017IndirectImpactonInventoryIncomeTaxExpense_BC46CCB8FF67AAD4C166205DEFF878EA" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:to="loc_dd_TaxCutsandJobsActof2017IndirectImpactonInventoryIncomeTaxExpense_BC46CCB8FF67AAD4C166205DEFF878EA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UndistributedEarningsOfForeignSubsidiaries" xlink:label="loc_us-gaap_UndistributedEarningsOfForeignSubsidiaries_97CBA0D1187352A22A8F205DEFF8C3FB" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_1364AFC8296DA98D6817205DEFF776CA" xlink:to="loc_us-gaap_UndistributedEarningsOfForeignSubsidiaries_97CBA0D1187352A22A8F205DEFF8C3FB" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesOperatingLossAndTaxCreditCarryforwardsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_4DA23D2E2B2C18BBD6A1205DEFC30584" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_73D67D5DEA48DBAE6B1B205DEFC25FF1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_4DA23D2E2B2C18BBD6A1205DEFC30584" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_73D67D5DEA48DBAE6B1B205DEFC25FF1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExpirationPeriodAxis" xlink:label="loc_dd_ExpirationPeriodAxis_BD35301018B527E56314205DEFC27B10" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_73D67D5DEA48DBAE6B1B205DEFC25FF1" xlink:to="loc_dd_ExpirationPeriodAxis_BD35301018B527E56314205DEFC27B10" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExpirationPeriodDomain" xlink:label="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ExpirationPeriodAxis_BD35301018B527E56314205DEFC27B10" xlink:to="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExpirationPeriodDomain" xlink:label="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ExpirationPeriodAxis_BD35301018B527E56314205DEFC27B10" xlink:to="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExpiringwithinFiveYearsMember" xlink:label="loc_dd_ExpiringwithinFiveYearsMember_940E5A62F3DDD6636083205DEFC258C0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E" xlink:to="loc_dd_ExpiringwithinFiveYearsMember_940E5A62F3DDD6636083205DEFC258C0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExpiringAfterFiveYearsOrHavingIndefiniteExpirationMember" xlink:label="loc_dd_ExpiringAfterFiveYearsOrHavingIndefiniteExpirationMember_E11854B99E20ACC3E972205DEFC38478" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ExpirationPeriodDomain_B21EFC8F7367D551649B205DEFC2DB0E" xlink:to="loc_dd_ExpiringAfterFiveYearsOrHavingIndefiniteExpirationMember_E11854B99E20ACC3E972205DEFC38478" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_027A760567CEDDAFAB12205DEFC343E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_4DA23D2E2B2C18BBD6A1205DEFC30584" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_027A760567CEDDAFAB12205DEFC343E4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_DD8E437DD00EFC0F6D69205DEFC37343" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_4DA23D2E2B2C18BBD6A1205DEFC30584" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_DD8E437DD00EFC0F6D69205DEFC37343" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TotalOperatingLossandTaxCreditCarryforwards" xlink:label="loc_dd_TotalOperatingLossandTaxCreditCarryforwards_D97D789671D0F81D11D3205DEFC49046" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_4DA23D2E2B2C18BBD6A1205DEFC30584" xlink:to="loc_dd_TotalOperatingLossandTaxCreditCarryforwards_D97D789671D0F81D11D3205DEFC49046" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesIncomeTaxesReconciliationToUsStatutoryRateDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_102910C5C8260D993D92304D27CA8A88" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_StatementTable_102910C5C8260D993D92304D27CA8A88" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED2551B3BD1BE40A35CE304D27CD7876" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_102910C5C8260D993D92304D27CA8A88" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED2551B3BD1BE40A35CE304D27CD7876" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_249CC7503DC762992744304D27CD1FD2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED2551B3BD1BE40A35CE304D27CD7876" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_249CC7503DC762992744304D27CD1FD2_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_249CC7503DC762992744304D27CD1FD2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED2551B3BD1BE40A35CE304D27CD7876" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_249CC7503DC762992744304D27CD1FD2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_7381C7273D9BDAEA47DD304D27CEFDE0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_249CC7503DC762992744304D27CD1FD2" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_7381C7273D9BDAEA47DD304D27CEFDE0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_86B5A830830CCD420329304D27CF5283" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_102910C5C8260D993D92304D27CA8A88" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_86B5A830830CCD420329304D27CF5283" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_86B5A830830CCD420329304D27CF5283" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_86B5A830830CCD420329304D27CF5283" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RepatriationAccrualMember" xlink:label="loc_dd_RepatriationAccrualMember_3513B4AD964E068C0615304D27CF9F77" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:to="loc_dd_RepatriationAccrualMember_3513B4AD964E068C0615304D27CF9F77" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxchargebenefitrelatedtoTheActMember" xlink:label="loc_dd_TaxchargebenefitrelatedtoTheActMember_4A7869020EE19467746A304D27D065E6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:to="loc_dd_TaxchargebenefitrelatedtoTheActMember_4A7869020EE19467746A304D27D065E6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SwissTaxReformMember" xlink:label="loc_dd_SwissTaxReformMember_CD8EA1CA5CF2198FFD9D304D27D0FB56" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:to="loc_dd_SwissTaxReformMember_CD8EA1CA5CF2198FFD9D304D27D0FB56" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedinterestreversalsMember" xlink:label="loc_dd_AccruedinterestreversalsMember_A9A2CB45F41437142C3E304D27D04333" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:to="loc_dd_AccruedinterestreversalsMember_A9A2CB45F41437142C3E304D27D04333" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BrazilValuationAllowanceMember" xlink:label="loc_dd_BrazilValuationAllowanceMember_849368E511015A7A6844304D27D1154A" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_835549DED39BCE76E137304D27CFB06E" xlink:to="loc_dd_BrazilValuationAllowanceMember_849368E511015A7A6844304D27D1154A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_10B2552ACF58214671C3304D27D1C6E1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_10B2552ACF58214671C3304D27D1C6E1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary_1617789ECC09A6ADCFFF304D27D2739B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary_1617789ECC09A6ADCFFF304D27D2739B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_BF35359822C8E218320D304D27D21FBA" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_BF35359822C8E218320D304D27D21FBA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent_F92B67BCD2BFA8EC85D6304D27D2D1D3" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationAcquisitionsDivestituresAndOwnershipRestructuringActivitiesPercent_F92B67BCD2BFA8EC85D6304D27D2D1D3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_D2756DA4BD0AE6B628D0304D27D2EAC1" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_D2756DA4BD0AE6B628D0304D27D2EAC1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent_E91255E110DFFD051899304D27D27D18" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationForeignCurrencyExchangeGainsLossesPercent_E91255E110DFFD051899304D27D27D18" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage_3033CE7A6C110972C4D2304D52EC1386" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percentage_3033CE7A6C110972C4D2304D52EC1386" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent" xlink:label="loc_dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent_4AA36E66AA4442661CA7304D27D377AB" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_dd_EffectiveIncomeTaxRateReconciliationSwissTaxReformPercent_4AA36E66AA4442661CA7304D27D377AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_74EB88F75F363D2B4A9F304D27D4B83A" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_74EB88F75F363D2B4A9F304D27D4B83A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_B9CF306E0F9A7C8AF231304D27D49D06" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_B9CF306E0F9A7C8AF231304D27D49D06" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_EA020F7188949ABFA5CA304D27D5E9AB" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_EA020F7188949ABFA5CA304D27D5E9AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_F70A5CCEF562438391A8304D27D5770D" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_F70A5CCEF562438391A8304D27D5770D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_1F8A48FC1C8E2655AB0D304D27D572CA" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_1F8A48FC1C8E2655AB0D304D27D572CA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:label="loc_us-gaap_OtherTaxExpenseBenefit_869F33943641EF522E46304D27D6E7EE" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_us-gaap_OtherTaxExpenseBenefit_869F33943641EF522E46304D27D6E7EE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations" xlink:label="loc_dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations_0E892B365EB43826CCF5304D27D67674" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_C4860DAF3A469A9B4701304D27D1B4B6" xlink:to="loc_dd_TaxbenefitchargerelatedtoaninternallegalentityrestructuringassociatedwiththeBusinessSeparations_0E892B365EB43826CCF5304D27D67674" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/IncomeTaxesTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/Inventories" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/InventoriesNarrativeDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/InventoriesScheduleOfInventoryDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryLineItems" xlink:label="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryCurrentTable" xlink:label="loc_us-gaap_InventoryCurrentTable_21EC8F2B4774F63B79F5205D2C630F4B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_us-gaap_InventoryCurrentTable_21EC8F2B4774F63B79F5205D2C630F4B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_8255852595D7A2704D49205D2C69696D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_21EC8F2B4774F63B79F5205D2C630F4B" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_8255852595D7A2704D49205D2C69696D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_A78F8F2A410EF6EEA1E5205D2C6A175B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_8255852595D7A2704D49205D2C69696D" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_A78F8F2A410EF6EEA1E5205D2C6A175B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_A78F8F2A410EF6EEA1E5205D2C6A175B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_8255852595D7A2704D49205D2C69696D" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_A78F8F2A410EF6EEA1E5205D2C6A175B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_MergerwithDowMember" xlink:label="loc_dd_MergerwithDowMember_FF7B0794223A8F31D95D205D2C6A82F1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_A78F8F2A410EF6EEA1E5205D2C6A175B" xlink:to="loc_dd_MergerwithDowMember_FF7B0794223A8F31D95D205D2C6A82F1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="loc_us-gaap_InventoryFinishedGoods_912ACBC351E700F6D068205D2C6B0F97" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_us-gaap_InventoryFinishedGoods_912ACBC351E700F6D068205D2C6B0F97" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryWorkInProcess" xlink:label="loc_us-gaap_InventoryWorkInProcess_027001242EC6E078039B205D2C6B1B7A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_us-gaap_InventoryWorkInProcess_027001242EC6E078039B205D2C6B1B7A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRawMaterialsAndSupplies" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_19E4BE864527B391C3C42094B4455093" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSupplies_19E4BE864527B391C3C42094B4455093" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryGross" xlink:label="loc_us-gaap_InventoryGross_153F7B4CAAB13705A772205D2C6C8139" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_us-gaap_InventoryGross_153F7B4CAAB13705A772205D2C6C8139" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationFairValueStepUpOfAcquiredInventory" xlink:label="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventory_C2321F3F75D208EAF1A8205D2C6AA33F" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventory_C2321F3F75D208EAF1A8205D2C6AA33F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold" xlink:label="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_7C9CA25403001681DCDF205D2C6B9C93" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_2C13C513C8443F7ABE93205D2C6AA42E" xlink:to="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_7C9CA25403001681DCDF205D2C6B9C93" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/InventoriesTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesFutureMinimumLeaseCommitmentsDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesLeaseCostsDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesLeaseTermAndDiscountRateDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesMaturityOfLeaseLiabilitiesDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_D0C07BED77102567A333F8823E4EDAFF" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_A358D716BFCAAF623389F8823E4DAAB0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_D0C07BED77102567A333F8823E4EDAFF" xlink:to="loc_us-gaap_StatementTable_A358D716BFCAAF623389F8823E4DAAB0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_C406B225A53BF8E68D7DF8823E4DC977" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_A358D716BFCAAF623389F8823E4DAAB0" xlink:to="loc_srt_RangeAxis_C406B225A53BF8E68D7DF8823E4DC977" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_C406B225A53BF8E68D7DF8823E4DC977" xlink:to="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_C406B225A53BF8E68D7DF8823E4DC977" xlink:to="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_D70237D4F4D9CC44C437F8823E4D868D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49" xlink:to="loc_srt_MinimumMember_D70237D4F4D9CC44C437F8823E4D868D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_2018715CE262334CE9E9F8823E4EE452" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5D8C3D34E74D3171939BF8823E4D4C49" xlink:to="loc_srt_MaximumMember_2018715CE262334CE9E9F8823E4EE452" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_138BA2954C059EA98610F8823E4E7B49" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_A358D716BFCAAF623389F8823E4DAAB0" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_138BA2954C059EA98610F8823E4E7B49" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_A36678B24C0C0B5EFAC2F8823E4EB3D9_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_138BA2954C059EA98610F8823E4E7B49" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_A36678B24C0C0B5EFAC2F8823E4EB3D9_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_A36678B24C0C0B5EFAC2F8823E4EB3D9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_138BA2954C059EA98610F8823E4E7B49" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_A36678B24C0C0B5EFAC2F8823E4EB3D9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ResidualValueGuaranteeMember" xlink:label="loc_dd_ResidualValueGuaranteeMember_5B8CFBCA76D13F806CA2F8823E4EF518" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_A36678B24C0C0B5EFAC2F8823E4EB3D9" xlink:to="loc_dd_ResidualValueGuaranteeMember_5B8CFBCA76D13F806CA2F8823E4EF518" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseNet_0CB30961834981AFE99BF8823E4FC466" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_D0C07BED77102567A333F8823E4EDAFF" xlink:to="loc_us-gaap_OperatingLeasesRentExpenseNet_0CB30961834981AFE99BF8823E4FC466" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LesseeOperatingandFinanceLeasesRemainingLeaseTerm" xlink:label="loc_dd_LesseeOperatingandFinanceLeasesRemainingLeaseTerm_2A264C90D1BDBD4127CBF8823E4F7308" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_D0C07BED77102567A333F8823E4EDAFF" xlink:to="loc_dd_LesseeOperatingandFinanceLeasesRemainingLeaseTerm_2A264C90D1BDBD4127CBF8823E4F7308" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_B13CE0A4196BC31F0B6BF8823E4FD680" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_D0C07BED77102567A333F8823E4EDAFF" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_B13CE0A4196BC31F0B6BF8823E4FD680" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:type="extended">
<link:loc xlink:href="dd-20191231.xsd#dd_ScheduleofLeaseAssetsandLiabilitiesLineItems" xlink:label="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:type="locator"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ScheduleofLeaseAssetsandLiabilitiesTable" xlink:label="loc_dd_ScheduleofLeaseAssetsandLiabilitiesTable_D52DEB93CF9F806644F7F8823E36BF00" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_dd_ScheduleofLeaseAssetsandLiabilitiesTable_D52DEB93CF9F806644F7F8823E36BF00" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_F9D810922F8897EABA85F8823E3795C1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesTable_D52DEB93CF9F806644F7F8823E36BF00" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_F9D810922F8897EABA85F8823E3795C1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_F9D810922F8897EABA85F8823E3795C1" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_F9D810922F8897EABA85F8823E3795C1" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_B87CE200C0FC1364ABBFF8823E37C3AB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_B87CE200C0FC1364ABBFF8823E37C3AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtMember" xlink:label="loc_us-gaap_ShortTermDebtMember_9299787218239951AEDAF8823E388B8B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818" xlink:to="loc_us-gaap_ShortTermDebtMember_9299787218239951AEDAF8823E388B8B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMember" xlink:label="loc_us-gaap_LongTermDebtMember_DBC00530BEA6BBE1D318F8823E381177" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_A8FB8E0EE4D00CFBAD29F8823E373818" xlink:to="loc_us-gaap_LongTermDebtMember_DBC00530BEA6BBE1D318F8823E381177" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_E8E5F081EEA7C5FBBD1EF8823E381B82" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_E8E5F081EEA7C5FBBD1EF8823E381B82" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_106CE3144FE721EFE2F9F8823E39E20D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_106CE3144FE721EFE2F9F8823E39E20D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_C88FFE6E7671AB69D25FF8823E399242" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_C88FFE6E7671AB69D25FF8823E399242" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_EEFCE63952E089C4E130F8823E3901D2" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_OperatingLeaseLiability_EEFCE63952E089C4E130F8823E3901D2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FinanceLeaseRightofUseAssetGross" xlink:label="loc_dd_FinanceLeaseRightofUseAssetGross_D461F338FE9C9C77CBD9F8823E3BB24C" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_dd_FinanceLeaseRightofUseAssetGross_D461F338FE9C9C77CBD9F8823E3BB24C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FinanceLeaseRightOfUseAssetAccumulatedDepreciation" xlink:label="loc_dd_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_DFC948C6F1C5825FF45AF8823E3BC7D2" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_dd_FinanceLeaseRightOfUseAssetAccumulatedDepreciation_DFC948C6F1C5825FF45AF8823E3BC7D2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_09B9208263A0C4D705A8F8823E3BA6A3" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_09B9208263A0C4D705A8F8823E3BA6A3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_F5202CD3EDDFC9E36F18F8823E3C070C" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_F5202CD3EDDFC9E36F18F8823E3C070C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_510102C8F40CFA03DB54F8823E3C9B3C" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_510102C8F40CFA03DB54F8823E3C9B3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_33EF813F6109CFFBA3C5F8823E3C692F" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofLeaseAssetsandLiabilitiesLineItems_DED9B76CA5A1754CD1AFF8823E385A33" xlink:to="loc_us-gaap_FinanceLeaseLiability_33EF813F6109CFFBA3C5F8823E3C692F" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesSupplementalCashFlowInformationDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/LeasesTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlans" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAdditionalInformationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_3A5206ECAD4794BA31F034CF27B8B949" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_3A5206ECAD4794BA31F034CF27B8B949" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_204A24032D1B63FF751234CF27B82A83_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_3A5206ECAD4794BA31F034CF27B8B949" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_204A24032D1B63FF751234CF27B82A83_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_204A24032D1B63FF751234CF27B82A83" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_3A5206ECAD4794BA31F034CF27B8B949" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_204A24032D1B63FF751234CF27B82A83" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_070436952598DDC5860134CF27B8E569" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_204A24032D1B63FF751234CF27B82A83" xlink:to="loc_us-gaap_PrivateEquityFundsMember_070436952598DDC5860134CF27B8E569" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_B10F676146D479BEA19D34CF27B83672" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_RestructuringPlanAxis_B10F676146D479BEA19D34CF27B83672" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_188495233C5B7BF975A634CF27B8613C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_B10F676146D479BEA19D34CF27B83672" xlink:to="loc_us-gaap_RestructuringPlanDomain_188495233C5B7BF975A634CF27B8613C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_188495233C5B7BF975A634CF27B8613C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_B10F676146D479BEA19D34CF27B83672" xlink:to="loc_us-gaap_RestructuringPlanDomain_188495233C5B7BF975A634CF27B8613C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A2016GlobalCostSavingsandRestructuringPlanMember" xlink:label="loc_dd_A2016GlobalCostSavingsandRestructuringPlanMember_95039FC5481CDA583D8D34CF27B81E00" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_188495233C5B7BF975A634CF27B8613C" xlink:to="loc_dd_A2016GlobalCostSavingsandRestructuringPlanMember_95039FC5481CDA583D8D34CF27B81E00" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_EF468259DF1218BA053B34CF27B86C38" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_EF468259DF1218BA053B34CF27B86C38" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_80452C823943042D1CF734CF27B81031_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_EF468259DF1218BA053B34CF27B86C38" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_80452C823943042D1CF734CF27B81031_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_80452C823943042D1CF734CF27B81031" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_EF468259DF1218BA053B34CF27B86C38" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_80452C823943042D1CF734CF27B81031" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_1388A333DF30921A179B34CF27B82E35" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_80452C823943042D1CF734CF27B81031" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_1388A333DF30921A179B34CF27B82E35" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="loc_us-gaap_RetirementPlanTaxStatusAxis_DDEA480CC76A9D564C2834CF27B8B787" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_RetirementPlanTaxStatusAxis_DDEA480CC76A9D564C2834CF27B8B787" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="loc_us-gaap_RetirementPlanTaxStatusDomain_E36BEAE75AC664B4E6C234CF27B8A773_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTaxStatusAxis_DDEA480CC76A9D564C2834CF27B8B787" xlink:to="loc_us-gaap_RetirementPlanTaxStatusDomain_E36BEAE75AC664B4E6C234CF27B8A773_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="loc_us-gaap_RetirementPlanTaxStatusDomain_E36BEAE75AC664B4E6C234CF27B8A773" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTaxStatusAxis_DDEA480CC76A9D564C2834CF27B8B787" xlink:to="loc_us-gaap_RetirementPlanTaxStatusDomain_E36BEAE75AC664B4E6C234CF27B8A773" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonqualifiedPlanMember" xlink:label="loc_us-gaap_NonqualifiedPlanMember_ACEDFE63B4526B0AB5C534CF27B8112B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTaxStatusDomain_E36BEAE75AC664B4E6C234CF27B8A773" xlink:to="loc_us-gaap_NonqualifiedPlanMember_ACEDFE63B4526B0AB5C534CF27B8112B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_BD9DD3D105B76C45D6A734CF27B80224" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_BD9DD3D105B76C45D6A734CF27B80224" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_BD9DD3D105B76C45D6A734CF27B80224" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_BD9DD3D105B76C45D6A734CF27B80224" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontOtherContributionPlansMember" xlink:label="loc_dd_DuPontOtherContributionPlansMember_F2F460E2EA82F9EC1DA334CF27B84056" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:to="loc_dd_DuPontOtherContributionPlansMember_F2F460E2EA82F9EC1DA334CF27B84056" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_0CD4C8DB4241EC69D68734CF27B86983" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_0CD4C8DB4241EC69D68734CF27B86983" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PrincipalU.S.PensionPlanMember" xlink:label="loc_dd_PrincipalU.S.PensionPlanMember_286A3C2249FDEE0F8BE534CF27B83C66" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:to="loc_dd_PrincipalU.S.PensionPlanMember_286A3C2249FDEE0F8BE534CF27B83C66" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_919B3C50F805688DE47634CF27B8CA77" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_919B3C50F805688DE47634CF27B8CA77" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_577F21D944A6C774CCA434CF27B82265" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8E8584A58F2CBC15255C34CF27B8703C" xlink:to="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_577F21D944A6C774CCA434CF27B82265" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="loc_us-gaap_RetirementPlanNameAxis_93509B5D938CFAAB876D34CF27B89104" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6B882F08926334F1BA1734CF27B85C3C" xlink:to="loc_us-gaap_RetirementPlanNameAxis_93509B5D938CFAAB876D34CF27B89104" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_93509B5D938CFAAB876D34CF27B89104" xlink:to="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_93509B5D938CFAAB876D34CF27B89104" xlink:to="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PrincipalU.S.PensionPlanMember" xlink:label="loc_dd_PrincipalU.S.PensionPlanMember_9F159DBF6B5F3D07160C34CF27B896DD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_PrincipalU.S.PensionPlanMember_9F159DBF6B5F3D07160C34CF27B896DD" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FundedPensionPlansotherthanPrincipalU.S.PlanandRemainingPlanswithnoPlanAssetsMember" xlink:label="loc_dd_FundedPensionPlansotherthanPrincipalU.S.PlanandRemainingPlanswithnoPlanAssetsMember_C2DE912B64017253EB2234CF27B828A2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_FundedPensionPlansotherthanPrincipalU.S.PlanandRemainingPlanswithnoPlanAssetsMember_C2DE912B64017253EB2234CF27B828A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_7E7603EBBB90A72440F634CF27B8B54A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_7E7603EBBB90A72440F634CF27B8B54A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RemainingPlanswithnoPlanAssetsMember" xlink:label="loc_dd_RemainingPlanswithnoPlanAssetsMember_5A9E48582B1E3796BBDA34CF27B8655B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_RemainingPlanswithnoPlanAssetsMember_5A9E48582B1E3796BBDA34CF27B8655B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_U.S.RetirementSavingsPlanMember" xlink:label="loc_dd_U.S.RetirementSavingsPlanMember_9D409EE276E86BDA3C6134CF27B87BD6" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_U.S.RetirementSavingsPlanMember_9D409EE276E86BDA3C6134CF27B87BD6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TrustAgreementMember" xlink:label="loc_dd_TrustAgreementMember_D61D3D15163E284D50D034CF27B85B19" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_TrustAgreementMember_D61D3D15163E284D50D034CF27B85B19" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaOtherContributionPlansMember" xlink:label="loc_dd_CortevaOtherContributionPlansMember_87E948622F20F692ADF234CF27B85EF3" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_AB6DD6C1230A437CEBF834CF27B80298" xlink:to="loc_dd_CortevaOtherContributionPlansMember_87E948622F20F692ADF234CF27B85EF3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_E70642D059EEDF753D2134CF27B8B54D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_E70642D059EEDF753D2134CF27B8B54D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_08F9EF25F963C37DB08E34CF27B89DC1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_08F9EF25F963C37DB08E34CF27B89DC1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_BC16109830D9268F8ED434CF27B8842B" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_BC16109830D9268F8ED434CF27B8842B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanEligibleEmployeeAgeThreshold" xlink:label="loc_dd_DefinedBenefitPlanEligibleEmployeeAgeThreshold_53EEAF4CDF8E239E9FD734CF27B89D66" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_DefinedBenefitPlanEligibleEmployeeAgeThreshold_53EEAF4CDF8E239E9FD734CF27B89D66" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Pretaxcashrequirementstocoveractualnetclaimscostsandrelatedadministrativeexpenses" xlink:label="loc_dd_Pretaxcashrequirementstocoveractualnetclaimscostsandrelatedadministrativeexpenses_D4F565C3811DD0C1A02134CF27B80E00" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_Pretaxcashrequirementstocoveractualnetclaimscostsandrelatedadministrativeexpenses_D4F565C3811DD0C1A02134CF27B80E00" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Employercontributiontotrust" xlink:label="loc_dd_Employercontributiontotrust_3FF76D6809BFA098410E34CF27B844E7" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_Employercontributiontotrust_3FF76D6809BFA098410E34CF27B844E7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TrustAssetDistribution" xlink:label="loc_dd_TrustAssetDistribution_B679FE51F8C92479C59A34CF27B80CFB" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_TrustAssetDistribution_B679FE51F8C92479C59A34CF27B80CFB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCash" xlink:label="loc_us-gaap_RestrictedCash_C918C1DA5378BA5D682134CF27B89E42" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_RestrictedCash_C918C1DA5378BA5D682134CF27B89E42" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_08E635049FB13D4CC1FE34CF27B8E776" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_08E635049FB13D4CC1FE34CF27B8E776" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_6BF9D9C408835926A0D934CF27B837DD" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_6BF9D9C408835926A0D934CF27B837DD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_79A4C21AD90C980E595234CF27B808FC" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_79A4C21AD90C980E595234CF27B808FC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedContributionPlanEmployerDiscretionaryContributionPercent" xlink:label="loc_dd_DefinedContributionPlanEmployerDiscretionaryContributionPercent_75C0CE8D1D8033BC281D34CF27B8AF11" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_DefinedContributionPlanEmployerDiscretionaryContributionPercent_75C0CE8D1D8033BC281D34CF27B8AF11" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_9C34AC28C81BFDAEB69D34CF27B80576" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_9C34AC28C81BFDAEB69D34CF27B80576" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedContributionPlanEmployersDiscretionaryContributionVestingPeriod" xlink:label="loc_dd_DefinedContributionPlanEmployersDiscretionaryContributionVestingPeriod_B1C95C27182B3E51839034CF27B8F5DA" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17C770EEDC24F02C2E9E34CF27B818ED" xlink:to="loc_dd_DefinedContributionPlanEmployersDiscretionaryContributionVestingPeriod_B1C95C27182B3E51839034CF27B8F5DA" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAmountsRecognizedInConsolidatedBalanceSheetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_793FB8B74FD70904B31D34CF27797859" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_793FB8B74FD70904B31D34CF27797859" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_39EB27677AA9DA10156034CF27795947" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_793FB8B74FD70904B31D34CF27797859" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_39EB27677AA9DA10156034CF27795947" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_39EB27677AA9DA10156034CF27795947" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_39EB27677AA9DA10156034CF27795947" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AssetsofdiscontinuedoperationscurrentMember" xlink:label="loc_dd_AssetsofdiscontinuedoperationscurrentMember_28662AD250A6ADB13B9234CF2779EF17" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:to="loc_dd_AssetsofdiscontinuedoperationscurrentMember_28662AD250A6ADB13B9234CF2779EF17" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_37DC4A9BD12BF04AF1A135501C8B3E33" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:to="loc_us-gaap_OtherAssetsMember_37DC4A9BD12BF04AF1A135501C8B3E33" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_EB714700F0C537DEB2D734CF2779A9C6" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_EB714700F0C537DEB2D734CF2779A9C6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LiabilitiesofdiscontinuedoperationsnoncurrentMember" xlink:label="loc_dd_LiabilitiesofdiscontinuedoperationsnoncurrentMember_A3E8D563EE57CE4CDF3B35525F090B1C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:to="loc_dd_LiabilitiesofdiscontinuedoperationsnoncurrentMember_A3E8D563EE57CE4CDF3B35525F090B1C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PensionandotherpostemploymentbenefitsnoncurrentMember" xlink:label="loc_dd_PensionandotherpostemploymentbenefitsnoncurrentMember_7C32ADAE103557FAC96734CF2779BED5" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_93477E6B171B6F2C7EF034CF2779F96B" xlink:to="loc_dd_PensionandotherpostemploymentbenefitsnoncurrentMember_7C32ADAE103557FAC96734CF2779BED5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED617AEED4F1177CA81A34CF2779E0E8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_793FB8B74FD70904B31D34CF27797859" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED617AEED4F1177CA81A34CF2779E0E8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_E1B4A2EF741F12B1566234CF2779FA65_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED617AEED4F1177CA81A34CF2779E0E8" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_E1B4A2EF741F12B1566234CF2779FA65_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_E1B4A2EF741F12B1566234CF2779FA65" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_ED617AEED4F1177CA81A34CF2779E0E8" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_E1B4A2EF741F12B1566234CF2779FA65" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_2502F7EC58B85822AAC434CF277922FB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_E1B4A2EF741F12B1566234CF2779FA65" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_2502F7EC58B85822AAC434CF277922FB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_7A62B325A9E3FBB0CA7E34CF2779FDE0" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_793FB8B74FD70904B31D34CF27797859" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_7A62B325A9E3FBB0CA7E34CF2779FDE0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_7A62B325A9E3FBB0CA7E34CF2779FDE0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_7A62B325A9E3FBB0CA7E34CF2779FDE0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_7CCC47087A7383EA9E2B34CF27798D87" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_7CCC47087A7383EA9E2B34CF27798D87" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_07930C1601763518F54434CF27796AEE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_A13F651EF741B334F3D434CF27790235" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_07930C1601763518F54434CF27796AEE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_642939283CAD9AC7741A34CF2779094F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_642939283CAD9AC7741A34CF2779094F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_F54FDA692ED3773D8C9934CF27795841" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_F54FDA692ED3773D8C9934CF27795841" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_2D4523EAD00826EFDEFB34CF2779C718" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_2D4523EAD00826EFDEFB34CF2779C718" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_61A2D7F4BD415D2554EB34CF277900A2" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_61A2D7F4BD415D2554EB34CF277900A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_4FCE04E54E2C40FFD24B34CF27796CB6" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_4FCE04E54E2C40FFD24B34CF27796CB6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_1E1976FD1297122930DF34CF2779360F" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_1E1976FD1297122930DF34CF2779360F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_C7266B9F83F3F555FDB634CF27793350" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_C7266B9F83F3F555FDB634CF27793350" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_B7266A1630C63457028034CF2779646B" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_B7266A1630C63457028034CF2779646B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation_18B64E27DE6817B6BA39355608E91CB9" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_0F03113777205E76D1F334CF27792666" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation_18B64E27DE6817B6BA39355608E91CB9" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansAssumedHealthCareCostTrendRatesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6C1BB0CD1F0239A7182F34CF2799E1CB" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_D74ECE560D413FC35A3634CF2799CFBC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6C1BB0CD1F0239A7182F34CF2799E1CB" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_D74ECE560D413FC35A3634CF2799CFBC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_F1AEEA0CC8F8C558885134CF27998F3D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_D74ECE560D413FC35A3634CF2799CFBC" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_F1AEEA0CC8F8C558885134CF27998F3D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_11F4A89C044AC71C351634CF27997659_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_F1AEEA0CC8F8C558885134CF27998F3D" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_11F4A89C044AC71C351634CF27997659_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_11F4A89C044AC71C351634CF27997659" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_F1AEEA0CC8F8C558885134CF27998F3D" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_11F4A89C044AC71C351634CF27997659" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0020E14373AAE90CC9F934CF2799FCAF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_11F4A89C044AC71C351634CF27997659" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0020E14373AAE90CC9F934CF2799FCAF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_30B598D0C10EB33A6C9934CF2799326F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6C1BB0CD1F0239A7182F34CF2799E1CB" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_30B598D0C10EB33A6C9934CF2799326F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_E02152908CE7BFA1849334CF2799F122" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6C1BB0CD1F0239A7182F34CF2799E1CB" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_E02152908CE7BFA1849334CF2799F122" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:label="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_C0DFCD815BFC1BA5A58C34CF2799A7D2" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6C1BB0CD1F0239A7182F34CF2799E1CB" xlink:to="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_C0DFCD815BFC1BA5A58C34CF2799A7D2" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansBasisOfFairValueMeasurementDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_F2B504603F01004756E84042ECDFD63C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_F2B504603F01004756E84042ECDFD63C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_B832795C51DDF1EC41824042ECE01B7C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F2B504603F01004756E84042ECDFD63C" xlink:to="loc_us-gaap_EquityComponentDomain_B832795C51DDF1EC41824042ECE01B7C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_B832795C51DDF1EC41824042ECE01B7C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F2B504603F01004756E84042ECDFD63C" xlink:to="loc_us-gaap_EquityComponentDomain_B832795C51DDF1EC41824042ECE01B7C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_82530C37E588A9D0F6FE4042ECE025DB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_B832795C51DDF1EC41824042ECE01B7C" xlink:to="loc_us-gaap_CommonStockMember_82530C37E588A9D0F6FE4042ECE025DB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_85F7EBCACCF1C0AA03764042ECE0FA96" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_85F7EBCACCF1C0AA03764042ECE0FA96" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_85F7EBCACCF1C0AA03764042ECE0FA96" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_85F7EBCACCF1C0AA03764042ECE0FA96" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DiscontinuedOperationsandOtherAdjustmentsMember" xlink:label="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_CEEC0D15056FF3F346404042ECE176C4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69" xlink:to="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_CEEC0D15056FF3F346404042ECE176C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_E27E45E4068E07B66BB24042ECE1C9C7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_9B4A35108BD63DDF3CF34042ECE17B69" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_E27E45E4068E07B66BB24042ECE1C9C7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_B3DC6B69195A77D7DF144042ECE2D1D9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_StatementClassOfStockAxis_B3DC6B69195A77D7DF144042ECE2D1D9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_D8EBDFDC1B3BCD1A02414042ECE2D418_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_B3DC6B69195A77D7DF144042ECE2D1D9" xlink:to="loc_us-gaap_ClassOfStockDomain_D8EBDFDC1B3BCD1A02414042ECE2D418_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_D8EBDFDC1B3BCD1A02414042ECE2D418" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_B3DC6B69195A77D7DF144042ECE2D1D9" xlink:to="loc_us-gaap_ClassOfStockDomain_D8EBDFDC1B3BCD1A02414042ECE2D418" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_8833DA2B60A11A7B0F934042ECE2B9AA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_D8EBDFDC1B3BCD1A02414042ECE2D418" xlink:to="loc_us-gaap_CommonStockMember_8833DA2B60A11A7B0F934042ECE2B9AA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionAxis" xlink:label="loc_us-gaap_GeographicDistributionAxis_FB513F9A6E79CD5D78B34042ECE22B6B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_GeographicDistributionAxis_FB513F9A6E79CD5D78B34042ECE22B6B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_FB513F9A6E79CD5D78B34042ECE22B6B" xlink:to="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_FB513F9A6E79CD5D78B34042ECE22B6B" xlink:to="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_450C1EA4113FC70A30F14042ECE33A45" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43" xlink:to="loc_us-gaap_NonUsMember_450C1EA4113FC70A30F14042ECE33A45" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_5BE94019E5B2F15CAF814042ECE363FA" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_B4C84E2964E2574AB8EF4042ECE3DE43" xlink:to="loc_country_US_5BE94019E5B2F15CAF814042ECE363FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_98425894B4B056D32CAC4042ECE3BD33" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_98425894B4B056D32CAC4042ECE3BD33" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_98425894B4B056D32CAC4042ECE3BD33" xlink:to="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_98425894B4B056D32CAC4042ECE3BD33" xlink:to="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontMember" xlink:label="loc_dd_DowDuPontMember_B50E1800907F918D751F4042ECE42BB0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6" xlink:to="loc_dd_DowDuPontMember_B50E1800907F918D751F4042ECE42BB0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontMember" xlink:label="loc_dd_DuPontMember_72B133B083DFD04F64D94042ECE42F0D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_2190C2763FEAE02C95914042ECE454D6" xlink:to="loc_dd_DuPontMember_72B133B083DFD04F64D94042ECE42F0D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_1BC2B979377E8F219C5B4042ECE48B2E" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_1BC2B979377E8F219C5B4042ECE48B2E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_0D3E2291A85058D47BE04042ECE58AEA_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_1BC2B979377E8F219C5B4042ECE48B2E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_0D3E2291A85058D47BE04042ECE58AEA_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_0D3E2291A85058D47BE04042ECE58AEA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_1BC2B979377E8F219C5B4042ECE48B2E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_0D3E2291A85058D47BE04042ECE58AEA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_7C9B750A00FC5DA8417C4042ECE500D4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_0D3E2291A85058D47BE04042ECE58AEA" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_7C9B750A00FC5DA8417C4042ECE500D4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_1723666FC67AB637772F4042ECE5D503" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_1723666FC67AB637772F4042ECE5D503" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_71DCE947BF242450295A4042ECE5B4A7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_1723666FC67AB637772F4042ECE5D503" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_71DCE947BF242450295A4042ECE5B4A7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_71DCE947BF242450295A4042ECE5B4A7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_1723666FC67AB637772F4042ECE5D503" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_71DCE947BF242450295A4042ECE5B4A7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_71DCE947BF242450295A4042ECE5B4A7" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_EDE583141F0D069E347D4042ECE6A255" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_EDE583141F0D069E347D4042ECE6A255" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_5F81B42185ACD67863014042ECE627C4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_EquitySecuritiesMember_5F81B42185ACD67863014042ECE627C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_FA0971167D910E1964234042ECE6608A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_FA0971167D910E1964234042ECE6608A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_BBAFB2F0DF6A6C7731824042ECE708CF" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_BBAFB2F0DF6A6C7731824042ECE708CF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_07A773DF3B08EC30819F4042ECE79B18" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_07A773DF3B08EC30819F4042ECE79B18" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgeFundsMember" xlink:label="loc_us-gaap_HedgeFundsMember_3B097692766B786AAD3D4042ECE76A12" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_HedgeFundsMember_3B097692766B786AAD3D4042ECE76A12" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_EA6F428C4796BB1BFE974042ECE78A50" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_PrivateEquityFundsMember_EA6F428C4796BB1BFE974042ECE78A50" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateMember" xlink:label="loc_us-gaap_RealEstateMember_DF480C3CFDDE2799335F4042ECE7B623" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_RealEstateMember_DF480C3CFDDE2799335F4042ECE7B623" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DerivativeAssetMember" xlink:label="loc_dd_DerivativeAssetMember_DF07023F3A01E7A3DB634042ECE70BA2" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_dd_DerivativeAssetMember_DF07023F3A01E7A3DB634042ECE70BA2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DerivativeLiabilityMember" xlink:label="loc_dd_DerivativeLiabilityMember_6BCC3BD48577954EC8EE4042ECE815F9" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_dd_DerivativeLiabilityMember_6BCC3BD48577954EC8EE4042ECE815F9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherInvestmentsMember" xlink:label="loc_us-gaap_OtherInvestmentsMember_E899549859FF20DE65624042ECE80FED" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_13920DADD778B6C3500F4042ECE6FFEA" xlink:to="loc_us-gaap_OtherInvestmentsMember_E899549859FF20DE65624042ECE80FED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96B644B35283ADBA46D74042ECE86A9A" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C79D68B834A54D9B5BDE4042ECDF3558" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96B644B35283ADBA46D74042ECE86A9A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96B644B35283ADBA46D74042ECE86A9A" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96B644B35283ADBA46D74042ECE86A9A" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_D33E38AEA0B93AEB783C4042ECE8F9EF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_D33E38AEA0B93AEB783C4042ECE8F9EF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_CF830F3001C19ED2864A4042ECE96B49" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_CF830F3001C19ED2864A4042ECE96B49" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_EB3B2B1DF1A350C1E44E4042ECE95F53" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_EB3B2B1DF1A350C1E44E4042ECE95F53" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InvestmentsmeasuredatnetassetvalueMember" xlink:label="loc_dd_InvestmentsmeasuredatnetassetvalueMember_624423E2DB1A4235C2B84042ECE978FC" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_728E10C4B7F5A70FF6C64042ECE8B087" xlink:to="loc_dd_InvestmentsmeasuredatnetassetvalueMember_624423E2DB1A4235C2B84042ECE978FC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets_BFC8BAB67F5D255D08694042ECEA948F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets_BFC8BAB67F5D255D08694042ECEA948F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_16E9B591C4EEEB7A0F234042ECEA23B3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_16E9B591C4EEEB7A0F234042ECEA23B3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AlternativeInvestment" xlink:label="loc_us-gaap_AlternativeInvestment_2CB0474D18127219761E4042ECEA05AC" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_us-gaap_AlternativeInvestment_2CB0474D18127219761E4042ECEA05AC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments" xlink:label="loc_dd_DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments_34095B2DDC3B6C0BF4A84042ECEA311F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_dd_DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments_34095B2DDC3B6C0BF4A84042ECEA311F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustReceivables" xlink:label="loc_dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustReceivables_A9730D9A1F27A84A6D524042ECEA2B00" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustReceivables_A9730D9A1F27A84A6D524042ECEA2B00" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustPayables" xlink:label="loc_dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustPayables_ED4747910C8DE36206744042ECEAA199" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_dd_DefinedBenefitPlanFairValueOfPlanAssetsReconcilingItemsPensionTrustPayables_ED4747910C8DE36206744042ECEAA199" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanAmountofEmployerandRelatedPartySecuritiesIncludedinPlanAssetsPercent" xlink:label="loc_dd_DefinedBenefitPlanAmountofEmployerandRelatedPartySecuritiesIncludedinPlanAssetsPercent_6A327F9D544151DB34DB4042ECEBDD17" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_21D423331440F0FCFFE44042ECE95608" xlink:to="loc_dd_DefinedBenefitPlanAmountofEmployerandRelatedPartySecuritiesIncludedinPlanAssetsPercent_6A327F9D544151DB34DB4042ECEBDD17" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansChangeInProjectedBenefitObligationsPlanAssetsAndFundedStatusDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_524C7D4FCE6DE2DFBCC33FC4DCAAFFE1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_524C7D4FCE6DE2DFBCC33FC4DCAAFFE1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8122A134098A157BF0A93FC4DCABF2C2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_524C7D4FCE6DE2DFBCC33FC4DCAAFFE1" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8122A134098A157BF0A93FC4DCABF2C2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8122A134098A157BF0A93FC4DCABF2C2" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8122A134098A157BF0A93FC4DCABF2C2" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_88B22B446B44307D54143FC4DCABE966" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_88B22B446B44307D54143FC4DCABE966" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_C35059FFFAE3C550566C3FC4DCAC1FF3" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FC4067C4F222579044F73FC4DCAB01FE" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_C35059FFFAE3C550566C3FC4DCAC1FF3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="loc_us-gaap_RetirementPlanNameAxis_7D0CE6112F3D753ACF173FC4DCAC995A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_524C7D4FCE6DE2DFBCC33FC4DCAAFFE1" xlink:to="loc_us-gaap_RetirementPlanNameAxis_7D0CE6112F3D753ACF173FC4DCAC995A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_7D0CE6112F3D753ACF173FC4DCAC995A" xlink:to="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_7D0CE6112F3D753ACF173FC4DCAC995A" xlink:to="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TrustAgreementMember" xlink:label="loc_dd_TrustAgreementMember_CC832B50CB106CF222DD3FC4DCADAFD4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:to="loc_dd_TrustAgreementMember_CC832B50CB106CF222DD3FC4DCADAFD4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_U.S.PlanswithPlanAssetsMember" xlink:label="loc_dd_U.S.PlanswithPlanAssetsMember_E0B947C3563495E4EAE23FC4DCADE231" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:to="loc_dd_U.S.PlanswithPlanAssetsMember_E0B947C3563495E4EAE23FC4DCADE231" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_NonU.S.planswithplanassetsMember" xlink:label="loc_dd_NonU.S.planswithplanassetsMember_8AAB1B61BD2D7FE88F493FC4DCAD66A4" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:to="loc_dd_NonU.S.planswithplanassetsMember_8AAB1B61BD2D7FE88F493FC4DCAD66A4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AllotherplansMember" xlink:label="loc_dd_AllotherplansMember_7E5B6CDC4A8E34343F3F3FC4DCAD41F9" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:to="loc_dd_AllotherplansMember_7E5B6CDC4A8E34343F3F3FC4DCAD41F9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PlansofDiscontinuedOperationsMember" xlink:label="loc_dd_PlansofDiscontinuedOperationsMember_E4F625302A0EEA58C1B03FC4DCAD3D09" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_F95547B8CA6B90CAFF893FC4DCACB824" xlink:to="loc_dd_PlansofDiscontinuedOperationsMember_E4F625302A0EEA58C1B03FC4DCAD3D09" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_9764025B6C5A3722081A3FC4DCAEA525" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_9764025B6C5A3722081A3FC4DCAEA525" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_7B8D0B7B4F4C4FE5931A3FC4DCAECDCA" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_7B8D0B7B4F4C4FE5931A3FC4DCAECDCA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_87A446B60DAFCB7D00703FC4DCAEA6C8" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_87A446B60DAFCB7D00703FC4DCAEA6C8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8A36EA960F49C47C27543FC4DCAEC342" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8A36EA960F49C47C27543FC4DCAEC342" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_046A73320F05A2E8B1A33FC4DCAF9EED" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_046A73320F05A2E8B1A33FC4DCAF9EED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_378CD622B54E0D34D7BB3FC4DCAF48FC" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_378CD622B54E0D34D7BB3FC4DCAF48FC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_D86CEF7E75D150B7178C3FC4DCAF9E1B" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_D86CEF7E75D150B7178C3FC4DCAF9E1B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresBenefitObligation" xlink:label="loc_dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresBenefitObligation_51C4FD75BED32AFEDCAB3FC4DCAF0112" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresBenefitObligation_51C4FD75BED32AFEDCAB3FC4DCAF0112" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_F5F3F9E75EECCCDADE5D3FC4DCAF93BF" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_F5F3F9E75EECCCDADE5D3FC4DCAF93BF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChangeinBenefitObligationImpactofInternalReorganizations" xlink:label="loc_dd_ChangeinBenefitObligationImpactofInternalReorganizations_DA9F437005191BCFF4263FC4DCB07A48" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_dd_ChangeinBenefitObligationImpactofInternalReorganizations_DA9F437005191BCFF4263FC4DCB07A48" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_70FDEF27317679AC77C53FC4DCB01D64" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_70FDEF27317679AC77C53FC4DCB01D64" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_5FEF43496CC6903C8AB63FC4DCB0E6A2" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_5FEF43496CC6903C8AB63FC4DCB0E6A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_FC1C5B16919F4A0FD2C83FC4DCB0A67D" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_FC1C5B16919F4A0FD2C83FC4DCB0A67D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_422B5DE93629AE356AFA3FC4DCB03E86" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_422B5DE93629AE356AFA3FC4DCB03E86" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_EA9B765C1DD3ED4299813FC4DCB1F6A8" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_EA9B765C1DD3ED4299813FC4DCB1F6A8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresPlanAssets" xlink:label="loc_dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresPlanAssets_E0D428E854B77CA1EEB23FC4DCB11CF4" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_dd_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsAndDivestituresPlanAssets_E0D428E854B77CA1EEB23FC4DCB11CF4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_E8354AA6A68D35A9CBBF3FC4DCB1CBAC" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_E8354AA6A68D35A9CBBF3FC4DCB1CBAC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ChangeinPlanAssetsImpactofInternalReorganizations" xlink:label="loc_dd_ChangeinPlanAssetsImpactofInternalReorganizations_1D2A433BF7D00F9B742E3FC4DCB157C9" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_dd_ChangeinPlanAssetsImpactofInternalReorganizations_1D2A433BF7D00F9B742E3FC4DCB157C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_CA8C455C0A105720F3403FC4DCB2686B" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_CA8C455C0A105720F3403FC4DCB2686B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation_9CBA975BB0E801C198123FC4DCB2C70B" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation_9CBA975BB0E801C198123FC4DCB2C70B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_43796ADC2A12260257753FC562DD61DD" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_A8270FDFA3742DB783E53FC4DCAD3FC3" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_43796ADC2A12260257753FC562DD61DD" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansComponentsOfNetPeriodicBenefitCostCreditAndAmountsRecognizedInOtherComprehensiveLossDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_4BAE22C7776FBEA3C2AE34CF275A502D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_4BAE22C7776FBEA3C2AE34CF275A502D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_03C32CFC8B90A737187334CF275A3A6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_4BAE22C7776FBEA3C2AE34CF275A502D" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_03C32CFC8B90A737187334CF275A3A6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_03C32CFC8B90A737187334CF275A3A6A" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_03C32CFC8B90A737187334CF275A3A6A" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_E94149FCFC0C7ADB191F34CF275A67A6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_E94149FCFC0C7ADB191F34CF275A67A6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_D36EB3ED7E328C367FD134CF275A4041" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_98EF8D3D3B605161346834CF275A9CF8" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_D36EB3ED7E328C367FD134CF275A4041" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_B5C97508098A254FFB2734CF275AF074" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_4BAE22C7776FBEA3C2AE34CF275A502D" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_B5C97508098A254FFB2734CF275AF074" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_B5C97508098A254FFB2734CF275AF074" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_B5C97508098A254FFB2734CF275AF074" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_87C3F1A75075549C985D34CF275ABFDE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_87C3F1A75075549C985D34CF275ABFDE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B11D0B6E95F66A40A2B634CF276AFF70" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_F2DB507FB3A2CAA059DB34CF275A4FD2" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B11D0B6E95F66A40A2B634CF276AFF70" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_806C562B35EAC8A802BE34CF276A429D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_806C562B35EAC8A802BE34CF276A429D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_735794F37F5E6DE6121334CF276A5881" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_735794F37F5E6DE6121334CF276A5881" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9146591AC63DC31FF48F34CF276AA67C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9146591AC63DC31FF48F34CF276AA67C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_6BB3344F6A8370C2862F34CF276A3511" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_6BB3344F6A8370C2862F34CF276A3511" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_649D13BD2D3931C577B534CF276A5558" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_649D13BD2D3931C577B534CF276A5558" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_C974B600C583DDEA274834CF276A99A0" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_C974B600C583DDEA274834CF276A99A0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_2882A8FE23D9CE2E86F434CF276ADF6C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_2882A8FE23D9CE2E86F434CF276ADF6C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_185C6ADF496D14FEB79534CF276AB915" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_185C6ADF496D14FEB79534CF276AB915" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_BA5F970CA91C9199548034CF276AF61B" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_BA5F970CA91C9199548034CF276AF61B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_E5240B8A78919111909734CF276A2D97" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_E5240B8A78919111909734CF276A2D97" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_D38832158818FE4FD5E934CF276A54F6" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_D38832158818FE4FD5E934CF276A54F6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_FA2DE77DDF07294F18B434CF276AB199" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_FA2DE77DDF07294F18B434CF276AB199" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationCurtailmentGainLossBeforeTax" xlink:label="loc_dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationCurtailmentGainLossBeforeTax_7AEEE40FDC9B4337D7D434CF276A034D" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationCurtailmentGainLossBeforeTax_7AEEE40FDC9B4337D7D434CF276A034D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationSettlementGainLossBeforeTax" xlink:label="loc_dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationSettlementGainLossBeforeTax_A288A479A3637CFE082E34CF276A9044" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_dd_OtherComprehensiveIncomeLossFinalizationOfPensionAndOtherPostretirementBenefitPlanValuationSettlementGainLossBeforeTax_A288A479A3637CFE082E34CF276A9044" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherComprehensiveIncomeLossDefinedBenefitPlanForeignCurrencyImpactbeforeTax" xlink:label="loc_dd_OtherComprehensiveIncomeLossDefinedBenefitPlanForeignCurrencyImpactbeforeTax_FC9B9809F1846CECCC6734CF276A6712" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_dd_OtherComprehensiveIncomeLossDefinedBenefitPlanForeignCurrencyImpactbeforeTax_FC9B9809F1846CECCC6734CF276A6712" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_D128626BE125C1EBACFD34CF276AFD28" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_D128626BE125C1EBACFD34CF276AFD28" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax" xlink:label="loc_us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax_4BCB8A00C58CCE9CB19C34CF276A9DBD" xlink:type="locator"/>
<link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax_4BCB8A00C58CCE9CB19C34CF276A9DBD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_FE59BFACB6E92ECBECD434CF276A986E" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_4A0DAD6CE88564CF0A9F34CF276A85E3" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_FE59BFACB6E92ECBECD434CF276A986E" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansEstimatedFutureBenefitPaymentsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_5DC9DB436AC13C4C054034CF274AC676" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_5DC9DB436AC13C4C054034CF274AC676" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_9F67BB5FD007CCC5723E34CF274A95A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_5DC9DB436AC13C4C054034CF274AC676" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_9F67BB5FD007CCC5723E34CF274A95A8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_9F67BB5FD007CCC5723E34CF274A95A8" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_9F67BB5FD007CCC5723E34CF274A95A8" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_6E2330A9547DA4C4023E34CF274AD70E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_6E2330A9547DA4C4023E34CF274AD70E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_9802C76629F264CA4E7134CF274A75A4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_AD6152A8E62566D5564234CF274AEBD2" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_9802C76629F264CA4E7134CF274A75A4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_4E8F0814A61B95447D0734CF274AF914" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_4E8F0814A61B95447D0734CF274AF914" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_655A7246C5901C050DD334CF274A104B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_655A7246C5901C050DD334CF274A104B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_234F727B71DA6CAB01F334CF275ABBFD" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_234F727B71DA6CAB01F334CF275ABBFD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_9CEE6DED065C90FA894D34CF275A848A" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_9CEE6DED065C90FA894D34CF275A848A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_F2D98A112E1EA4E44BD534CF275A5D36" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_F2D98A112E1EA4E44BD534CF275A5D36" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_97B828FD2F66555212B634CF275A67C6" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_97B828FD2F66555212B634CF275A67C6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanExpectedFuturePaymentsTotal" xlink:label="loc_dd_DefinedBenefitPlanExpectedFuturePaymentsTotal_813BABCE12603E716DDF34CF275A069B" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_918C1B76C1A68C09345534CF274A4B05" xlink:to="loc_dd_DefinedBenefitPlanExpectedFuturePaymentsTotal_813BABCE12603E716DDF34CF275A069B" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_90D0727E7F1A1BB3F37A34CF276A177E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_3C268EB3A8CF3EE38CDC34CF276A7789" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_90D0727E7F1A1BB3F37A34CF276A177E" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_3C268EB3A8CF3EE38CDC34CF276A7789" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_0050F71573AA9633B10F34CF276A363B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_3C268EB3A8CF3EE38CDC34CF276A7789" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_0050F71573AA9633B10F34CF276A363B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_18F1DA69ECE96317466E34CF276A16BC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0050F71573AA9633B10F34CF276A363B" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_18F1DA69ECE96317466E34CF276A16BC_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_18F1DA69ECE96317466E34CF276A16BC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0050F71573AA9633B10F34CF276A363B" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_18F1DA69ECE96317466E34CF276A16BC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_ACF7AB74E84316B022B934CF276AC39A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_18F1DA69ECE96317466E34CF276A16BC" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_ACF7AB74E84316B022B934CF276AC39A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_B01C4B5C5DF30DEF099134CF276A9FF6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_3C268EB3A8CF3EE38CDC34CF276A7789" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_B01C4B5C5DF30DEF099134CF276A9FF6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_C45F1578964FA6871FE334CF276A1B37_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_B01C4B5C5DF30DEF099134CF276A9FF6" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_C45F1578964FA6871FE334CF276A1B37_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_C45F1578964FA6871FE334CF276A1B37" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_B01C4B5C5DF30DEF099134CF276A9FF6" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_C45F1578964FA6871FE334CF276A1B37" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_682D4DE2C165C06D0FEC34CF276A12EC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_C45F1578964FA6871FE334CF276A1B37" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_682D4DE2C165C06D0FEC34CF276A12EC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_2947BF865B7EEC02C53E34CF276A41BB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_90D0727E7F1A1BB3F37A34CF276A177E" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_2947BF865B7EEC02C53E34CF276A41BB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8134D959760A76A2EA8D34CF276A2C12" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_90D0727E7F1A1BB3F37A34CF276A177E" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8134D959760A76A2EA8D34CF276A2C12" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansPensionPlansWithProjectedBenefitObligationsInExcessOfPlanAssetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_53B3E31872872A2B6ECF34CF277940A8" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_FC576488442D8FB6D8BF34CF2779A561" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_53B3E31872872A2B6ECF34CF277940A8" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_FC576488442D8FB6D8BF34CF2779A561" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_EB23D33ABBA805CAE20634CF2779E87E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_FC576488442D8FB6D8BF34CF2779A561" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_EB23D33ABBA805CAE20634CF2779E87E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1EFE8C9152C45A2CA70934CF2779D301_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_EB23D33ABBA805CAE20634CF2779E87E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1EFE8C9152C45A2CA70934CF2779D301_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1EFE8C9152C45A2CA70934CF2779D301" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_EB23D33ABBA805CAE20634CF2779E87E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1EFE8C9152C45A2CA70934CF2779D301" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_368A3959DF397E8A2F7834CF27796E00" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1EFE8C9152C45A2CA70934CF2779D301" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_368A3959DF397E8A2F7834CF27796E00" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_2942D7534DAF07EBBD5A34CF27790A72" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_FC576488442D8FB6D8BF34CF2779A561" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_2942D7534DAF07EBBD5A34CF27790A72" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_EEAC53EFDDBEB798694634CF2779806D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_2942D7534DAF07EBBD5A34CF27790A72" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_EEAC53EFDDBEB798694634CF2779806D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_EEAC53EFDDBEB798694634CF2779806D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_2942D7534DAF07EBBD5A34CF27790A72" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_EEAC53EFDDBEB798694634CF2779806D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_9CBBC1E449AB5AAE74FD34CF2779ED6B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_EEAC53EFDDBEB798694634CF2779806D" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_9CBBC1E449AB5AAE74FD34CF2779ED6B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanPlanWithBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation" xlink:label="loc_dd_DefinedBenefitPlanPlanWithBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_5582C44A47E57F83742F34CF27797235" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_53B3E31872872A2B6ECF34CF277940A8" xlink:to="loc_dd_DefinedBenefitPlanPlanWithBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_5582C44A47E57F83742F34CF27797235" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_174ED218D5F4882F399534CF27798FE5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_53B3E31872872A2B6ECF34CF277940A8" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_174ED218D5F4882F399534CF27798FE5" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansSummaryOfFairValueMeasurementOfLevel3PensionPlanAssetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionAxis" xlink:label="loc_us-gaap_GeographicDistributionAxis_7383B5C390C39FC474E33FCC22923BC6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:to="loc_us-gaap_GeographicDistributionAxis_7383B5C390C39FC474E33FCC22923BC6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_7383B5C390C39FC474E33FCC22923BC6" xlink:to="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_7383B5C390C39FC474E33FCC22923BC6" xlink:to="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_036D4A53116AE11D9BCE3FCC22927F39" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14" xlink:to="loc_us-gaap_NonUsMember_036D4A53116AE11D9BCE3FCC22927F39" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_BA8B4818575DDB1F2FA83FCC22922F9E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_164083419F553B4EDAC03FCC22924E14" xlink:to="loc_country_US_BA8B4818575DDB1F2FA83FCC22922F9E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_A2388EB43ADF742BF7C43FCC229234FA" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_A2388EB43ADF742BF7C43FCC229234FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_22254783E59E2FB8870F3FCC229238EB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_A2388EB43ADF742BF7C43FCC229234FA" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_22254783E59E2FB8870F3FCC229238EB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_22254783E59E2FB8870F3FCC229238EB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_A2388EB43ADF742BF7C43FCC229234FA" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_22254783E59E2FB8870F3FCC229238EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_E4FE3526C8E554E070523FCC22925DF8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_22254783E59E2FB8870F3FCC229238EB" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_E4FE3526C8E554E070523FCC22925DF8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F1FAE7274C5ADFA0E46B3FCC2292B145" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F1FAE7274C5ADFA0E46B3FCC2292B145" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F1FAE7274C5ADFA0E46B3FCC2292B145" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F1FAE7274C5ADFA0E46B3FCC2292B145" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_D480F58843F3EAD0BA143FCC2292ACD8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_EquitySecuritiesMember_D480F58843F3EAD0BA143FCC2292ACD8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_5177BAA00CEB507DF4D63FCC229269A0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_5177BAA00CEB507DF4D63FCC229269A0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_58CCD55B5F46B7D0671A3FCC2292D545" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_58CCD55B5F46B7D0671A3FCC2292D545" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgeFundsMember" xlink:label="loc_us-gaap_HedgeFundsMember_2A0327D24146E02550AC3FCC22926495" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_HedgeFundsMember_2A0327D24146E02550AC3FCC22926495" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_19D0F37B9AE83048FC513FCC2292EBA8" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_PrivateEquityFundsMember_19D0F37B9AE83048FC513FCC2292EBA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateMember" xlink:label="loc_us-gaap_RealEstateMember_2AFDBA8E5139AD71A9AB3FCC22929617" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_RealEstateMember_2AFDBA8E5139AD71A9AB3FCC22929617" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherInvestmentsMember" xlink:label="loc_us-gaap_OtherInvestmentsMember_8402801D3DC7DA3A639F3FCC2292516D" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8555D0C18CB9BDEFE6613FCC229222B3" xlink:to="loc_us-gaap_OtherInvestmentsMember_8402801D3DC7DA3A639F3FCC2292516D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FE8CD05602123585176A3FCC2292B125" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_13EBCC9C8FEAD24EFEAC3FCC2292BAF3" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FE8CD05602123585176A3FCC2292B125" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1112AC2D933C7AF5F6793FCC2292B8CF_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FE8CD05602123585176A3FCC2292B125" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1112AC2D933C7AF5F6793FCC2292B8CF_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1112AC2D933C7AF5F6793FCC2292B8CF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FE8CD05602123585176A3FCC2292B125" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1112AC2D933C7AF5F6793FCC2292B8CF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_FA1373A9A885473C76DB3FCC229270D9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1112AC2D933C7AF5F6793FCC2292B8CF" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_FA1373A9A885473C76DB3FCC229270D9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6ED7410A845E99F901473FCC2292E2BE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6ED7410A845E99F901473FCC2292E2BE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod_059ECA922567A9CA002F3FCC22925102" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod_059ECA922567A9CA002F3FCC22925102" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_8FE396CFB4B1E2384EEE3FCC2292B23D" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_8FE396CFB4B1E2384EEE3FCC2292B23D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements" xlink:label="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_A62DA6099035F318C2933FCC229251FA" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements_A62DA6099035F318C2933FCC229251FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels" xlink:label="loc_us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels_C7178F5B73B6E15BF54E3FCC22928829" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels_C7178F5B73B6E15BF54E3FCC22928829" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Planassetstransferredduetosaleliquidationspinoffordivestiture" xlink:label="loc_dd_Planassetstransferredduetosaleliquidationspinoffordivestiture_060E42DB0E4B519E41D03FD218DF95D4" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1EB9FC968E601C5C5A183FCC229284F1" xlink:to="loc_dd_Planassetstransferredduetosaleliquidationspinoffordivestiture_060E42DB0E4B519E41D03FD218DF95D4" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansTargetAllocationForPlanAssetsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_670DAB9FF1250E57831C34CF274AB707" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C36EA26328A893D65F6334CF274ACB25" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_670DAB9FF1250E57831C34CF274AB707" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C36EA26328A893D65F6334CF274ACB25" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionAxis" xlink:label="loc_us-gaap_GeographicDistributionAxis_E41CA7D171C4EAD6C21534CF274A939D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C36EA26328A893D65F6334CF274ACB25" xlink:to="loc_us-gaap_GeographicDistributionAxis_E41CA7D171C4EAD6C21534CF274A939D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_E41CA7D171C4EAD6C21534CF274A939D" xlink:to="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_E41CA7D171C4EAD6C21534CF274A939D" xlink:to="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_5A05065D4E5C2965938534CF274A66C4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572" xlink:to="loc_country_US_5A05065D4E5C2965938534CF274A66C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_5625A77668C3EF1401D134CF274A0757" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_0E6BF2B1594E4E134DDF34CF274AC572" xlink:to="loc_us-gaap_NonUsMember_5625A77668C3EF1401D134CF274A0757" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_E328BA975A5159CFE15F34CF274A3A6A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C36EA26328A893D65F6334CF274ACB25" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_E328BA975A5159CFE15F34CF274A3A6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9EE8D84FE826E955EECB34CF274A78A8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_E328BA975A5159CFE15F34CF274A3A6A" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9EE8D84FE826E955EECB34CF274A78A8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9EE8D84FE826E955EECB34CF274A78A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_E328BA975A5159CFE15F34CF274A3A6A" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9EE8D84FE826E955EECB34CF274A78A8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_5437E04E97EA4F66E6C334CF274A1C1D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9EE8D84FE826E955EECB34CF274A78A8" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_5437E04E97EA4F66E6C334CF274A1C1D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_967E24D33B8CF6638E2434CF274A7A82" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_C36EA26328A893D65F6334CF274ACB25" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_967E24D33B8CF6638E2434CF274A7A82" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_967E24D33B8CF6638E2434CF274A7A82" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_967E24D33B8CF6638E2434CF274A7A82" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_C8FC15BCF61BA4A4166F34CF274ACABB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_EquitySecuritiesMember_C8FC15BCF61BA4A4166F34CF274ACABB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_9E076F7749B76988185B34CF274A5279" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_9E076F7749B76988185B34CF274A5279" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgeFundsMember" xlink:label="loc_us-gaap_HedgeFundsMember_F53E98FA898514F0A3CE34CF274A4F44" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_HedgeFundsMember_F53E98FA898514F0A3CE34CF274A4F44" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_DAA3E87045CD417DE0D634CF274AB2A5" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_PrivateEquityFundsMember_DAA3E87045CD417DE0D634CF274AB2A5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateMember" xlink:label="loc_us-gaap_RealEstateMember_DDEEE82D13197A2F9E6A34CF274A518D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_RealEstateMember_DDEEE82D13197A2F9E6A34CF274A518D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_0AC98988FEC26EC680F034CF274A41D0" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_E80D6B27EE27C04684B134CF274AC196" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_0AC98988FEC26EC680F034CF274A41D0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E2D8703DB44A3DDC852F34CF274A1BF2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_670DAB9FF1250E57831C34CF274AB707" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E2D8703DB44A3DDC852F34CF274A1BF2" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsAndPeriodicBenefitCostOpebDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_7D83F831CCBECB6ACC6734CF2799138F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_7CEA726B39B1F80D411734CF2799EB65" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_7D83F831CCBECB6ACC6734CF2799138F" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_7CEA726B39B1F80D411734CF2799EB65" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8E5CBF6964FD56B620DF34CF2799C1B0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_7CEA726B39B1F80D411734CF2799EB65" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8E5CBF6964FD56B620DF34CF2799C1B0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FE200B323C5C5229096534CF27994F25_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8E5CBF6964FD56B620DF34CF2799C1B0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FE200B323C5C5229096534CF27994F25_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FE200B323C5C5229096534CF27994F25" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8E5CBF6964FD56B620DF34CF2799C1B0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FE200B323C5C5229096534CF27994F25" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_88E46ADC74102C724D9234CF2799CDA8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FE200B323C5C5229096534CF27994F25" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_88E46ADC74102C724D9234CF2799CDA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_0A298FF95DA8483E5B6434CF27990729" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_7D83F831CCBECB6ACC6734CF2799138F" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_0A298FF95DA8483E5B6434CF27990729" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_92063DA5EAE157D176A234CF2799A42C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_7D83F831CCBECB6ACC6734CF2799138F" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_92063DA5EAE157D176A234CF2799A42C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineBenefitObligationsPensionDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_00A550A7C86ACCC4D56434CF27A804A5" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC2E00C8F3285436786A34CF27A851AE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_00A550A7C86ACCC4D56434CF27A804A5" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC2E00C8F3285436786A34CF27A851AE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="loc_us-gaap_RetirementPlanNameAxis_1E8FC35E5F0AD0F3C26335312C144E85" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC2E00C8F3285436786A34CF27A851AE" xlink:to="loc_us-gaap_RetirementPlanNameAxis_1E8FC35E5F0AD0F3C26335312C144E85" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_EAE48410F27EF6051CC735312C8DA3FA_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_1E8FC35E5F0AD0F3C26335312C144E85" xlink:to="loc_us-gaap_RetirementPlanNameDomain_EAE48410F27EF6051CC735312C8DA3FA_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_EAE48410F27EF6051CC735312C8DA3FA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_1E8FC35E5F0AD0F3C26335312C144E85" xlink:to="loc_us-gaap_RetirementPlanNameDomain_EAE48410F27EF6051CC735312C8DA3FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_43833973CA7C4F1EB913353163E981DA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_EAE48410F27EF6051CC735312C8DA3FA" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_43833973CA7C4F1EB913353163E981DA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_5700308B45BD60DB5A5D34CF27A81D68" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_00A550A7C86ACCC4D56434CF27A804A5" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_5700308B45BD60DB5A5D34CF27A81D68" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_7462A90D5D9061B0E7B334CF27A86983" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_00A550A7C86ACCC4D56434CF27A804A5" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_7462A90D5D9061B0E7B334CF27A86983" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PensionPlansAndOtherPostEmploymentBenefitPlansWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostPensionDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A02EB0114AD7FC3907DA34CF27A8935F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2066144AF7C68C6C6F9534CF27A8F103" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A02EB0114AD7FC3907DA34CF27A8935F" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2066144AF7C68C6C6F9534CF27A8F103" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_29134890CBAF980CDF0A34CF27A858C3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2066144AF7C68C6C6F9534CF27A8F103" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_29134890CBAF980CDF0A34CF27A858C3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_07EAA29F3F74FF5AC96034CF27A8259C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_29134890CBAF980CDF0A34CF27A858C3" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_07EAA29F3F74FF5AC96034CF27A8259C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_07EAA29F3F74FF5AC96034CF27A8259C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_29134890CBAF980CDF0A34CF27A858C3" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_07EAA29F3F74FF5AC96034CF27A8259C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_6693372DDADE38729B9534CF27A83E5F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_07EAA29F3F74FF5AC96034CF27A8259C" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_6693372DDADE38729B9534CF27A83E5F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="loc_us-gaap_RetirementPlanNameAxis_727F91CC32FBF65AF85F34CF27A8B759" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2066144AF7C68C6C6F9534CF27A8F103" xlink:to="loc_us-gaap_RetirementPlanNameAxis_727F91CC32FBF65AF85F34CF27A8B759" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_CD160C3D7ED3E3C89DEA34CF27A8DF7D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_727F91CC32FBF65AF85F34CF27A8B759" xlink:to="loc_us-gaap_RetirementPlanNameDomain_CD160C3D7ED3E3C89DEA34CF27A8DF7D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="loc_us-gaap_RetirementPlanNameDomain_CD160C3D7ED3E3C89DEA34CF27A8DF7D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_727F91CC32FBF65AF85F34CF27A8B759" xlink:to="loc_us-gaap_RetirementPlanNameDomain_CD160C3D7ED3E3C89DEA34CF27A8DF7D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PrincipalU.S.PensionPlanMember" xlink:label="loc_dd_PrincipalU.S.PensionPlanMember_6E4059FA65B0DB2CB62034CF27A849B8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_CD160C3D7ED3E3C89DEA34CF27A8DF7D" xlink:to="loc_dd_PrincipalU.S.PensionPlanMember_6E4059FA65B0DB2CB62034CF27A849B8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_3FCA89B6C2D1D1AE434834CF27A8B913" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A02EB0114AD7FC3907DA34CF27A8935F" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_3FCA89B6C2D1D1AE434834CF27A8B913" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_0CD1AE40BAAA0BD98B0834CF27A87AB6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A02EB0114AD7FC3907DA34CF27A8935F" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_0CD1AE40BAAA0BD98B0834CF27A87AB6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_9F9E510E4BFE798C02563535E3AF8ADD" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A02EB0114AD7FC3907DA34CF27A8935F" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_9F9E510E4BFE798C02563535E3AF8ADD" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PropertyPlantAndEquipment" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/PropertyPlantAndEquipmentScheduleOfDepreciationDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_7E84297ACF3C042F44F7205DEF6B4CB6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_7E84297ACF3C042F44F7205DEF6B4CB6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_A931F8F88337EF9105C7205DEF6BAEAE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_7E84297ACF3C042F44F7205DEF6B4CB6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_A931F8F88337EF9105C7205DEF6BAEAE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_A931F8F88337EF9105C7205DEF6BAEAE" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_A931F8F88337EF9105C7205DEF6BAEAE" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_9EA600BBA988AC70C83C205DEF6CA0F7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_9EA600BBA988AC70C83C205DEF6CA0F7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingMember" xlink:label="loc_us-gaap_BuildingMember_D93ABAB7A45AE7A37EF2205DEF6C2FED" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_BuildingMember_D93ABAB7A45AE7A37EF2205DEF6C2FED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_39352F024BCE76A8955C205DEF6DF111" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_39352F024BCE76A8955C205DEF6DF111" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:label="loc_us-gaap_ConstructionInProgressMember_2325D0FAD5E97E986D44205DEF6DCD10" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_ConstructionInProgressMember_2325D0FAD5E97E986D44205DEF6DCD10" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_8F9D53BB8D10218567EA205DEF6D8A78" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_8F9D53BB8D10218567EA205DEF6D8A78" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandImprovementsMember" xlink:label="loc_us-gaap_LandImprovementsMember_F32917AE42F8111EC52D2060F6462174" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_5C89F5E1A69CF71A252D205DEF6CF647" xlink:to="loc_us-gaap_LandImprovementsMember_F32917AE42F8111EC52D2060F6462174" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_8723F22DCA70E0B8D3A9205DEF6D7640" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_7E84297ACF3C042F44F7205DEF6B4CB6" xlink:to="loc_srt_RangeAxis_8723F22DCA70E0B8D3A9205DEF6D7640" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_8723F22DCA70E0B8D3A9205DEF6D7640" xlink:to="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_8723F22DCA70E0B8D3A9205DEF6D7640" xlink:to="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_CBFA11CDBB62DF29CEE2205DEF6E3B53" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C" xlink:to="loc_srt_MinimumMember_CBFA11CDBB62DF29CEE2205DEF6E3B53" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_92831EA545916B2F32AC205DEF6E1E8A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_67004F73905A6BBA8FAD205DEF6DAC4C" xlink:to="loc_srt_MaximumMember_92831EA545916B2F32AC205DEF6E1E8A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_ADBA6059808086AABCA5205DEF6F4113" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_ADBA6059808086AABCA5205DEF6F4113" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5CFB724B0E1CE32CFDA5205DEF6F7C85" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_5CFB724B0E1CE32CFDA5205DEF6F7C85" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3879F989B566EE9CDDF4205DEF6F9875" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_3879F989B566EE9CDDF4205DEF6F9875" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_B44D62FF89FF8AABEDF6205DEF6EF5A3" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_6E5B6DD71580E752FE15205DEF6E0CB5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_B44D62FF89FF8AABEDF6205DEF6EF5A3" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/PropertyPlantAndEquipmentTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/QuaterlyFinancialData" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataParentheticalsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectOfFourthQuarterEventsLineItems" xlink:label="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable" xlink:label="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_54002C1E8E3833C7DEEB1812E4FD8809" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_54002C1E8E3833C7DEEB1812E4FD8809" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_54002C1E8E3833C7DEEB1812E4FD8809" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_54002C1E8E3833C7DEEB1812E4FD8809" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SaleofJVMember" xlink:label="loc_dd_SaleofJVMember_4C0FA0E6B8B6E540DC5E1812E4FDEAD0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:to="loc_dd_SaleofJVMember_4C0FA0E6B8B6E540DC5E1812E4FDEAD0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeconsolidationofasubsidiaryMember" xlink:label="loc_dd_DeconsolidationofasubsidiaryMember_82230B33147B815E18511812E4FD0074" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:to="loc_dd_DeconsolidationofasubsidiaryMember_82230B33147B815E18511812E4FD0074" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SwissVAMember" xlink:label="loc_dd_SwissVAMember_FF5C9909619BFA7D0D4A1812FBB0A767" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:to="loc_dd_SwissVAMember_FF5C9909619BFA7D0D4A1812FBB0A767" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxchargebenefitrelatedtoTheActMember" xlink:label="loc_dd_TaxchargebenefitrelatedtoTheActMember_99D3715283A84AF9EDC91812E4FD1B21" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_27CE006982546B9AC5401812E4FD645E" xlink:to="loc_dd_TaxchargebenefitrelatedtoTheActMember_99D3715283A84AF9EDC91812E4FD1B21" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1FE186069F64ED8E8B811812E4FD47DB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_1FE186069F64ED8E8B811812E4FD47DB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_46192B8E4445F22CCEF31812E4FD6F90_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1FE186069F64ED8E8B811812E4FD47DB" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_46192B8E4445F22CCEF31812E4FD6F90_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_46192B8E4445F22CCEF31812E4FD6F90" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1FE186069F64ED8E8B811812E4FD47DB" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_46192B8E4445F22CCEF31812E4FD6F90" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_MergerwithDowMember" xlink:label="loc_dd_MergerwithDowMember_E08D697A0F715921087E1812E4FDD7F3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_46192B8E4445F22CCEF31812E4FD6F90" xlink:to="loc_dd_MergerwithDowMember_E08D697A0F715921087E1812E4FDD7F3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_BF0BDECEB4DAED70B25A1812E4FDB2BB" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_BF0BDECEB4DAED70B25A1812E4FDB2BB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_BF0BDECEB4DAED70B25A1812E4FDB2BB" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_BF0BDECEB4DAED70B25A1812E4FDB2BB" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SwissTaxReformMember" xlink:label="loc_dd_SwissTaxReformMember_D9A62F421D3A20DC889B1812E4FD5E93" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:to="loc_dd_SwissTaxReformMember_D9A62F421D3A20DC889B1812E4FD5E93" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BrazilValuationAllowanceMember" xlink:label="loc_dd_BrazilValuationAllowanceMember_033C973624C7D6A63C481812E4FDAC0E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:to="loc_dd_BrazilValuationAllowanceMember_033C973624C7D6A63C481812E4FDAC0E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InternalEntityRestructuringMember" xlink:label="loc_dd_InternalEntityRestructuringMember_A835557B2CF5D5D296C41812E4FD15D9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:to="loc_dd_InternalEntityRestructuringMember_A835557B2CF5D5D296C41812E4FD15D9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PensionResizeMember" xlink:label="loc_dd_PensionResizeMember_6F6F215BDC3CBAB91CD51812E4FD0710" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_E404F24A6938DFF0D2B01812E4FD93DC" xlink:to="loc_dd_PensionResizeMember_6F6F215BDC3CBAB91CD51812E4FD0710" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_DB658B19CE2D1D26A76E1812E4FD0605" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_DB658B19CE2D1D26A76E1812E4FD0605" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_DB658B19CE2D1D26A76E1812E4FD0605" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_DB658B19CE2D1D26A76E1812E4FD0605" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_8808E52FD5D877FCE8261812E4FD0EA5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283" xlink:to="loc_dd_ArgentinepesodevaluationMember_8808E52FD5D877FCE8261812E4FD0EA5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_6BD9433DC18C031BCAFF1812E4FD76AE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_A119DA658D3D763E5BEC1812E4FD3283" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_6BD9433DC18C031BCAFF1812E4FD76AE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_10553580E81DFAB64F621812E4FDA551" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable_BE8AF15CB8B03BD8D4721812E4FD5A69" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_10553580E81DFAB64F621812E4FDA551" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_13DFAAFC8AD1DC240FA01812E4FDC2AD_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_10553580E81DFAB64F621812E4FDA551" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_13DFAAFC8AD1DC240FA01812E4FDC2AD_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_13DFAAFC8AD1DC240FA01812E4FDC2AD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_10553580E81DFAB64F621812E4FDA551" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_13DFAAFC8AD1DC240FA01812E4FDC2AD" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_F19FFBD334FEBBD460701812E4FDEC93" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_13DFAAFC8AD1DC240FA01812E4FDC2AD" xlink:to="loc_dd_HedgingProgramMember_F19FFBD334FEBBD460701812E4FDEC93" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold" xlink:label="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_B41EF685FF776ECAA5D31812E4FD1133" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_B41EF685FF776ECAA5D31812E4FD1133" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_E00E9423415F20CBFF001812E4FDFFAE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_E00E9423415F20CBFF001812E4FDFFAE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_EE1714F1063B3EBED2771812E4FDFACC" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_EE1714F1063B3EBED2771812E4FDFACC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:label="loc_us-gaap_OtherTaxExpenseBenefit_02314738ECB4CE20A67F1812E4FDBF69" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_us-gaap_OtherTaxExpenseBenefit_02314738ECB4CE20A67F1812E4FDBF69" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_C8DCAE365269CE3C41C21812E4FDDFFB" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_C8DCAE365269CE3C41C21812E4FDDFFB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxBenefitExpense" xlink:label="loc_dd_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxBenefitExpense_59789A2AAD2BF0A50D4F1812E50D116D" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectOfFourthQuarterEventsLineItems_4F706D733A0B950A95021812E4FDF0C9" xlink:to="loc_dd_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxBenefitExpense_59789A2AAD2BF0A50D4F1812E50D116D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/QuaterlyFinancialDataQuarterlyFinancialDataRestatementDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_D5A273B3BB4DE6CC927BF8823B56A636" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_StatementTable_D5A273B3BB4DE6CC927BF8823B56A636" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationAxis" xlink:label="loc_dd_CommoncontrolcombinationAxis_280086DDD746F3C83859F8823B562503" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_D5A273B3BB4DE6CC927BF8823B56A636" xlink:to="loc_dd_CommoncontrolcombinationAxis_280086DDD746F3C83859F8823B562503" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CommoncontrolcombinationAxis_280086DDD746F3C83859F8823B562503" xlink:to="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CommoncontrolcombinationDomain" xlink:label="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CommoncontrolcombinationAxis_280086DDD746F3C83859F8823B562503" xlink:to="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HistoricalEIDMember" xlink:label="loc_dd_HistoricalEIDMember_CD0B295A925A26FDE232F8823B57AE92" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517" xlink:to="loc_dd_HistoricalEIDMember_CD0B295A925A26FDE232F8823B57AE92" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DiscontinuedOperationsandOtherAdjustmentsMember" xlink:label="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_6DEC1083FA8FF1DF9C04F8823B570CD8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517" xlink:to="loc_dd_DiscontinuedOperationsandOtherAdjustmentsMember_6DEC1083FA8FF1DF9C04F8823B570CD8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASMember" xlink:label="loc_dd_DASMember_0641E1E640B95397927AF8823B5739FB" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CommoncontrolcombinationDomain_C2DD5C819137675E87A4F8823B573517" xlink:to="loc_dd_DASMember_0641E1E640B95397927AF8823B5739FB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_3A91DEEDB6D1A954CE34F8823B58CA8E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_Revenues_3A91DEEDB6D1A954CE34F8823B58CA8E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_C23F94AFD3795933F726F8823B586FB7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_C23F94AFD3795933F726F8823B586FB7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_AD24827568FF0D7B7089F8823B59A911" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_AD24827568FF0D7B7089F8823B59A911" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationIntegrationAndSeparationRelatedCosts" xlink:label="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_FC4846E46B33E3D590D2F8823B590028" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_FC4846E46B33E3D590D2F8823B590028" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6F8CE214718A1D770DA2F8823B59694E" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6F8CE214718A1D770DA2F8823B59694E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_BE5E6070BC96D39E33A3F8823B5E1F46" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_1B75129A92FC0F18E1A4F8823B5844DB" xlink:to="loc_us-gaap_NetIncomeLoss_BE5E6070BC96D39E33A3F8823B5E1F46" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/QuaterlyFinancialDataTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_30F46A65EBDD6D28F115F8823B7D33A3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_12D3CE14544BE74D5477F8823B7C8569" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_30F46A65EBDD6D28F115F8823B7D33A3" xlink:to="loc_us-gaap_StatementTable_12D3CE14544BE74D5477F8823B7C8569" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_9EACE4876ADFDCCD7E04F8823B7CA425" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_12D3CE14544BE74D5477F8823B7C8569" xlink:to="loc_srt_RestatementAxis_9EACE4876ADFDCCD7E04F8823B7CA425" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_0C3319FEBA262D237C43F8823B7D7903_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_9EACE4876ADFDCCD7E04F8823B7CA425" xlink:to="loc_srt_RestatementDomain_0C3319FEBA262D237C43F8823B7D7903_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_0C3319FEBA262D237C43F8823B7D7903" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_9EACE4876ADFDCCD7E04F8823B7CA425" xlink:to="loc_srt_RestatementDomain_0C3319FEBA262D237C43F8823B7D7903" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_C15B7B96FB32026A1A0EF8823B7D1B25" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_30F46A65EBDD6D28F115F8823B7D33A3" xlink:to="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_C15B7B96FB32026A1A0EF8823B7D1B25" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RecentAccountingGuidance" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RecentAccountingGuidanceAccountingPronouncementsTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RecentAccountingGuidanceLeaseAsuEffectOnBalanceSheetDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_564FAD61A9381753CDE420F5F7608BDC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_564FAD61A9381753CDE420F5F7608BDC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_D7DF55AE059246EA9BC420F5F76089B1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_564FAD61A9381753CDE420F5F7608BDC" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_D7DF55AE059246EA9BC420F5F76089B1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_D7DF55AE059246EA9BC420F5F76089B1" xlink:to="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_D7DF55AE059246EA9BC420F5F76089B1" xlink:to="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EffectofAdoptionofASU201602Member" xlink:label="loc_dd_EffectofAdoptionofASU201602Member_DB07EF252143BC4D733720F5F7619DCA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA" xlink:to="loc_dd_EffectofAdoptionofASU201602Member_DB07EF252143BC4D733720F5F7619DCA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_UpdatedMember" xlink:label="loc_dd_UpdatedMember_994D5C1273018334758C20F5F7616E60" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7170FA25ADE8D1A8827220F5F760C3EA" xlink:to="loc_dd_UpdatedMember_994D5C1273018334758C20F5F7616E60" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_195E7CA713A31797491020F5F7628641" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_195E7CA713A31797491020F5F7628641" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_B345E8B83E8465477DA320F5F762A8B2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_B345E8B83E8465477DA320F5F762A8B2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_4979F8417432131F795B20F5F762D232" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_4979F8417432131F795B20F5F762D232" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_490550CF07E5FB67C46F20F5F764954C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_DebtCurrent_490550CF07E5FB67C46F20F5F764954C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_BF71E0D54DC2CE9026BC20F5F764B40D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_BF71E0D54DC2CE9026BC20F5F764B40D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A895CA9DDFE1A9EC515C20F5F765C6AD" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A895CA9DDFE1A9EC515C20F5F765C6AD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_42145D733599C68AAF1020F5F76561A4" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_42145D733599C68AAF1020F5F76561A4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_CE4C206473F7DC5316D620F5F7653D5A" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_CE4C206473F7DC5316D620F5F7653D5A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_BA3726E01544F71FE82320F5F765F7C6" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_10A273D36B2F214E12A220F5F761C9E7" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_BA3726E01544F71FE82320F5F765F7C6" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RecentAccountingGuidanceRecentAccountingGuidancePolicies" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RelatedPartiesNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RelatedPartiesServicesProvidedByAndToDowDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_D2B49D52137B478BA18B3655BADAB8D5" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5195DDA838E437B749FA3655BAD71BDD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_D2B49D52137B478BA18B3655BADAB8D5" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5195DDA838E437B749FA3655BAD71BDD" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_57FD20FAB2EDF39715F83655BAD75EEF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5195DDA838E437B749FA3655BAD71BDD" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_57FD20FAB2EDF39715F83655BAD75EEF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_D6FC70F7DAFD202C453F3655BAD89D05_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_57FD20FAB2EDF39715F83655BAD75EEF" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_D6FC70F7DAFD202C453F3655BAD89D05_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_D6FC70F7DAFD202C453F3655BAD89D05" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_57FD20FAB2EDF39715F83655BAD75EEF" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_D6FC70F7DAFD202C453F3655BAD89D05" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_BEDCF2B366BEACDF82003655BAD88701" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_D6FC70F7DAFD202C453F3655BAD89D05" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_BEDCF2B366BEACDF82003655BAD88701" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_FE5A75986433581EACA03655BAD80700" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_5195DDA838E437B749FA3655BAD71BDD" xlink:to="loc_dd_CompanyAxis_FE5A75986433581EACA03655BAD80700" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_21C53A9B0D9EF752EDC93655BAD9676E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_FE5A75986433581EACA03655BAD80700" xlink:to="loc_dd_CortevaDomain_21C53A9B0D9EF752EDC93655BAD9676E_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_21C53A9B0D9EF752EDC93655BAD9676E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_FE5A75986433581EACA03655BAD80700" xlink:to="loc_dd_CortevaDomain_21C53A9B0D9EF752EDC93655BAD9676E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowMember" xlink:label="loc_dd_DowMember_8F787B722C00BFCA12083655BAD90C86" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_21C53A9B0D9EF752EDC93655BAD9676E" xlink:to="loc_dd_DowMember_8F787B722C00BFCA12083655BAD90C86" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrent_C761160780FDCB5037523655BADA7F9E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_D2B49D52137B478BA18B3655BADAB8D5" xlink:to="loc_us-gaap_AccountsPayableRelatedPartiesCurrent_C761160780FDCB5037523655BADA7F9E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_AD06A917EC2B7E3C76B73655BADAA8FC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_D2B49D52137B478BA18B3655BADAB8D5" xlink:to="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_AD06A917EC2B7E3C76B73655BADAA8FC" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RelatedPartiesTransactionsWithDowdupontDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_5ECBBF58E69D92CC97AB3655BAD2CBE3" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_345A80ED18D11B41F4963655BAD1F133" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_5ECBBF58E69D92CC97AB3655BAD2CBE3" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_345A80ED18D11B41F4963655BAD1F133" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_67318A89191516D354913655BAD1689B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_345A80ED18D11B41F4963655BAD1F133" xlink:to="loc_dd_CompanyAxis_67318A89191516D354913655BAD1689B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_85E881B247286902E1C33655BAD16913_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_67318A89191516D354913655BAD1689B" xlink:to="loc_dd_CortevaDomain_85E881B247286902E1C33655BAD16913_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_85E881B247286902E1C33655BAD16913" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_67318A89191516D354913655BAD1689B" xlink:to="loc_dd_CortevaDomain_85E881B247286902E1C33655BAD16913" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontMember" xlink:label="loc_dd_DowDuPontMember_90D6B407F0AC75C04AD23655BAD125DE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_85E881B247286902E1C33655BAD16913" xlink:to="loc_dd_DowDuPontMember_90D6B407F0AC75C04AD23655BAD125DE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_7A58CDC072996593E1B53655BAD2C4B5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_5ECBBF58E69D92CC97AB3655BAD2CBE3" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_7A58CDC072996593E1B53655BAD2C4B5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDistributionsToAffiliates" xlink:label="loc_us-gaap_PaymentsOfDistributionsToAffiliates_45BB42377A29D41361663655BAD27237" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_5ECBBF58E69D92CC97AB3655BAD2CBE3" xlink:to="loc_us-gaap_PaymentsOfDistributionsToAffiliates_45BB42377A29D41361663655BAD27237" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_1020298D8F63EB3DCFC03655BAD242F1" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_5ECBBF58E69D92CC97AB3655BAD2CBE3" xlink:to="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_1020298D8F63EB3DCFC03655BAD242F1" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RestructuringAndAssetRelatedCharges" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesAssetImpairmentsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_4A933E95637F7EEB3EBC39CE1A457D3C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_363BFEA13012E57AF8E939CE1A4159A9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_4A933E95637F7EEB3EBC39CE1A457D3C" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_363BFEA13012E57AF8E939CE1A4159A9" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F15132AD53324F310D0339CE1A42D379" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_363BFEA13012E57AF8E939CE1A4159A9" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F15132AD53324F310D0339CE1A42D379" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0C67C6B4B4DD0C07A4D239CE1A426C23_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F15132AD53324F310D0339CE1A42D379" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0C67C6B4B4DD0C07A4D239CE1A426C23_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0C67C6B4B4DD0C07A4D239CE1A426C23" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_F15132AD53324F310D0339CE1A42D379" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0C67C6B4B4DD0C07A4D239CE1A426C23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InProcessResearchAndDevelopmentMember" xlink:label="loc_us-gaap_InProcessResearchAndDevelopmentMember_EFBD8DA2F9A876B5554139CE1A4251FD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0C67C6B4B4DD0C07A4D239CE1A426C23" xlink:to="loc_us-gaap_InProcessResearchAndDevelopmentMember_EFBD8DA2F9A876B5554139CE1A4251FD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_FA172A1A0EFA6F155CD539CE1A455E09" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_4A933E95637F7EEB3EBC39CE1A457D3C" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_FA172A1A0EFA6F155CD539CE1A455E09" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax" xlink:label="loc_dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax_D8FE1086C2347EE9B54439CE1A45BF0E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_4A933E95637F7EEB3EBC39CE1A457D3C" xlink:to="loc_dd_ImpairmentofIntangibleAssetsIndefinitelivedExcludingGoodwillAfterTax_D8FE1086C2347EE9B54439CE1A45BF0E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_E415424A60EEC5B5A6B139CE1A458A4F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_4A933E95637F7EEB3EBC39CE1A457D3C" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_E415424A60EEC5B5A6B139CE1A458A4F" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesDowdupontAgricultureDivisionRestructuringProgramDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_1E04682CD699291A6C7C39CE176081F5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_1E04682CD699291A6C7C39CE176081F5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_81CC211BE90690FE621839CE1764838E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_1E04682CD699291A6C7C39CE176081F5" xlink:to="loc_us-gaap_RestructuringPlanAxis_81CC211BE90690FE621839CE1764838E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_626A42283D621227810B39CE1764F3E8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_81CC211BE90690FE621839CE1764838E" xlink:to="loc_us-gaap_RestructuringPlanDomain_626A42283D621227810B39CE1764F3E8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_626A42283D621227810B39CE1764F3E8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_81CC211BE90690FE621839CE1764838E" xlink:to="loc_us-gaap_RestructuringPlanDomain_626A42283D621227810B39CE1764F3E8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontAgricultureDivisionRestructuringProgramMember" xlink:label="loc_dd_DowDuPontAgricultureDivisionRestructuringProgramMember_665DF45F02E9C30956EA39CE1765C79F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_626A42283D621227810B39CE1764F3E8" xlink:to="loc_dd_DowDuPontAgricultureDivisionRestructuringProgramMember_665DF45F02E9C30956EA39CE1765C79F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_8B76BADF2D84A132797B39CE17639E21" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_1E04682CD699291A6C7C39CE176081F5" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_8B76BADF2D84A132797B39CE17639E21" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_8B76BADF2D84A132797B39CE17639E21" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_8B76BADF2D84A132797B39CE17639E21" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="loc_us-gaap_EmployeeSeveranceMember_96AF4E1AF23F7374D9E239CE17649FBC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189" xlink:to="loc_us-gaap_EmployeeSeveranceMember_96AF4E1AF23F7374D9E239CE17649FBC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AssetRelatedChargesMember" xlink:label="loc_dd_AssetRelatedChargesMember_2F22C8962122C59B988139CE17637A1D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_7F112CF058F8175F830939CE17631189" xlink:to="loc_dd_AssetRelatedChargesMember_2F22C8962122C59B988139CE17637A1D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_5C6DDDC955A8DCE8A21639CE1760E07B" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_1E04682CD699291A6C7C39CE176081F5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_5C6DDDC955A8DCE8A21639CE1760E07B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5C6DDDC955A8DCE8A21639CE1760E07B" xlink:to="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5C6DDDC955A8DCE8A21639CE1760E07B" xlink:to="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_8C9155D3228451733F3C39CE17623316" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3" xlink:to="loc_dd_SeedMember_8C9155D3228451733F3C39CE17623316" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_C84106ED434DCACB5F1B39CE1762F371" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3" xlink:to="loc_dd_CropProtectionMember_C84106ED434DCACB5F1B39CE1762F371" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateMember" xlink:label="loc_us-gaap_CorporateMember_B21593AFB93BE52E012F39CE17630FD6" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_51921BC59E790B32EF0739CE1761A1C3" xlink:to="loc_us-gaap_CorporateMember_B21593AFB93BE52E012F39CE17630FD6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_58BC6BFE9FFB0C4F004739CE1765E2BF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_58BC6BFE9FFB0C4F004739CE1765E2BF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_0CA57BC5C48C5F0E29ED39CE17657878" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_us-gaap_RestructuringReserve_0CA57BC5C48C5F0E29ED39CE17657878" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="loc_us-gaap_PaymentsForRestructuring_54FF70CD3575F1A2D78439CE1765FF94" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_us-gaap_PaymentsForRestructuring_54FF70CD3575F1A2D78439CE1765FF94" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Assetwriteoffsandadjustments" xlink:label="loc_dd_Assetwriteoffsandadjustments_97E79FBF93B3FA048FC739CE176650C8" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_dd_Assetwriteoffsandadjustments_97E79FBF93B3FA048FC739CE176650C8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeparationRelatedTransactionCosts" xlink:label="loc_dd_SeparationRelatedTransactionCosts_0A0F06FA19AF696080B039CE17665590" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7830C6282C7800D4E04D39CE1765F5AD" xlink:to="loc_dd_SeparationRelatedTransactionCosts_0A0F06FA19AF696080B039CE17665590" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesDowdupontCostSynergyProgramDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_52816F9DE04D81C1323039CE1777E67D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_52816F9DE04D81C1323039CE1777E67D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_6354ACC1E3767259128039CE177CF466" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_52816F9DE04D81C1323039CE1777E67D" xlink:to="loc_us-gaap_RestructuringPlanAxis_6354ACC1E3767259128039CE177CF466" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_CDDB6DAC6BF78C5A5B8D39CE177C9A2C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_6354ACC1E3767259128039CE177CF466" xlink:to="loc_us-gaap_RestructuringPlanDomain_CDDB6DAC6BF78C5A5B8D39CE177C9A2C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_CDDB6DAC6BF78C5A5B8D39CE177C9A2C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_6354ACC1E3767259128039CE177CF466" xlink:to="loc_us-gaap_RestructuringPlanDomain_CDDB6DAC6BF78C5A5B8D39CE177C9A2C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontCostSynergyProgramMember" xlink:label="loc_dd_DowDuPontCostSynergyProgramMember_B085E4D1037705213D9439CE177CC98D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_CDDB6DAC6BF78C5A5B8D39CE177C9A2C" xlink:to="loc_dd_DowDuPontCostSynergyProgramMember_B085E4D1037705213D9439CE177CC98D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_07CB8C92C272D5A5206039CE1777FA0D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_52816F9DE04D81C1323039CE1777E67D" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_07CB8C92C272D5A5206039CE1777FA0D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_07CB8C92C272D5A5206039CE1777FA0D" xlink:to="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_07CB8C92C272D5A5206039CE1777FA0D" xlink:to="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_633993CA60223AD4DBF139CE1778DCF3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E" xlink:to="loc_dd_SeedMember_633993CA60223AD4DBF139CE1778DCF3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_539FE45697C2058D343C39CE17787D8E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E" xlink:to="loc_dd_CropProtectionMember_539FE45697C2058D343C39CE17787D8E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateMember" xlink:label="loc_us-gaap_CorporateMember_12E030869C191BAF41A239CE177861B8" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_704723959803CA2CE32C39CE17776F2E" xlink:to="loc_us-gaap_CorporateMember_12E030869C191BAF41A239CE177861B8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_4F84FA84D57464FE439439CE177B8630" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_52816F9DE04D81C1323039CE1777E67D" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_4F84FA84D57464FE439439CE177B8630" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_4F84FA84D57464FE439439CE177B8630" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_4F84FA84D57464FE439439CE177B8630" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="loc_us-gaap_EmployeeSeveranceMember_FBC8D4554A377A65157239CE177B3C62" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D" xlink:to="loc_us-gaap_EmployeeSeveranceMember_FBC8D4554A377A65157239CE177B3C62" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CostsRelatedToContractTerminationMember" xlink:label="loc_dd_CostsRelatedToContractTerminationMember_EE74E86FCC760050E2C739CE177BC345" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D" xlink:to="loc_dd_CostsRelatedToContractTerminationMember_EE74E86FCC760050E2C739CE177BC345" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AssetRelatedChargesMember" xlink:label="loc_dd_AssetRelatedChargesMember_4F30B3DECF5A564C01A639CE177B9A82" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_30FE98822D433100A60E39CE177B500D" xlink:to="loc_dd_AssetRelatedChargesMember_4F30B3DECF5A564C01A639CE177B9A82" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_A6EFECB133E7A9F9E71D39CE177D1C7C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_A6EFECB133E7A9F9E71D39CE177D1C7C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_529AB03586AA70F66D3739CE177D6409" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:to="loc_us-gaap_RestructuringReserve_529AB03586AA70F66D3739CE177D6409" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="loc_us-gaap_PaymentsForRestructuring_6E9ACD75FF548AEFA21839CE177E1FAA" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:to="loc_us-gaap_PaymentsForRestructuring_6E9ACD75FF548AEFA21839CE177E1FAA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Assetwriteoffsandadjustments" xlink:label="loc_dd_Assetwriteoffsandadjustments_CD6D9DEC5986514EABEF39CE177EEDE0" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_D186836F30714CCB06D339CE177CB31C" xlink:to="loc_dd_Assetwriteoffsandadjustments_CD6D9DEC5986514EABEF39CE177EEDE0" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RestructuringAndAssetRelatedChargesTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_5538FF30E7F2FED0A14439CE172234AE" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_936FF1B48E44910CB68439CE171B8C8E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5538FF30E7F2FED0A14439CE172234AE" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_936FF1B48E44910CB68439CE171B8C8E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_AC87B218B76FF7E3B14D39CE171C554F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_936FF1B48E44910CB68439CE171B8C8E" xlink:to="loc_us-gaap_RestructuringPlanAxis_AC87B218B76FF7E3B14D39CE171C554F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_AC87B218B76FF7E3B14D39CE171C554F" xlink:to="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_AC87B218B76FF7E3B14D39CE171C554F" xlink:to="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontAgricultureDivisionRestructuringProgramMember" xlink:label="loc_dd_DowDuPontAgricultureDivisionRestructuringProgramMember_819D4428D7D1077C7CD239CE171FAB43" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26" xlink:to="loc_dd_DowDuPontAgricultureDivisionRestructuringProgramMember_819D4428D7D1077C7CD239CE171FAB43" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowDuPontCostSynergyProgramMember" xlink:label="loc_dd_DowDuPontCostSynergyProgramMember_DE955108AC24AEAFCDB639CE171D7030" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_8221FDB49A88DF14AB7539CE171C6D26" xlink:to="loc_dd_DowDuPontCostSynergyProgramMember_DE955108AC24AEAFCDB639CE171D7030" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock" xlink:label="loc_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_737D923EE6E8EB9DA37139CE17228E01" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_5538FF30E7F2FED0A14439CE172234AE" xlink:to="loc_us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock_737D923EE6E8EB9DA37139CE17228E01" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueContractBalancesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_0BA4A88C4FDB2EAC2B7BF88240884271" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_0BA4A88C4FDB2EAC2B7BF88240884271" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_079184D4896A9058070EF8824088F5DB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_0BA4A88C4FDB2EAC2B7BF88240884271" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_079184D4896A9058070EF8824088F5DB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_079184D4896A9058070EF8824088F5DB" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_079184D4896A9058070EF8824088F5DB" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_5AE96331532DAA5DC594F8824089FFB8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_5AE96331532DAA5DC594F8824089FFB8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_6F034B26D0C1306BE7C9F88240893062" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_886AD9600BECE4BE2976F8824088C074" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_6F034B26D0C1306BE7C9F88240893062" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Accountsandnotesreceivabletrade" xlink:label="loc_dd_Accountsandnotesreceivabletrade_D4C5028F6A8D2E910689F882408A3035" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_dd_Accountsandnotesreceivabletrade_D4C5028F6A8D2E910689F882408A3035" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_0D8ADDA22D3397A1501DF882408AE623" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_0D8ADDA22D3397A1501DF882408AE623" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_0B15C774E2B8306B0B43F882408AD113" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_0B15C774E2B8306B0B43F882408AD113" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredRevenue" xlink:label="loc_us-gaap_DeferredRevenue_30D4B74B39C2782C42CAF882408A6826" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_us-gaap_DeferredRevenue_30D4B74B39C2782C42CAF882408A6826" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredRevenueRevenueRecognized1" xlink:label="loc_us-gaap_DeferredRevenueRevenueRecognized1_E0C0D872A157DE5E525EF882408B08A7" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_DDA74C7D969CE637B110F8824089B556" xlink:to="loc_us-gaap_DeferredRevenueRevenueRecognized1_E0C0D872A157DE5E525EF882408B08A7" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueDisaggregationOfRevenueGeoDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_1958A7DDB1EA5A34CB49F882404BBA9A" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_32CC04A7E935C9C5B42BF88240476614" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_1958A7DDB1EA5A34CB49F882404BBA9A" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_32CC04A7E935C9C5B42BF88240476614" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_D8FFF766FFF00852DE36F882404707ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_32CC04A7E935C9C5B42BF88240476614" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_D8FFF766FFF00852DE36F882404707ED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D8FFF766FFF00852DE36F882404707ED" xlink:to="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D8FFF766FFF00852DE36F882404707ED" xlink:to="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_D862E12107A18C4FA468F8824048BB8F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41" xlink:to="loc_dd_SeedMember_D862E12107A18C4FA468F8824048BB8F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_6FEAD7F1D13AB48F76FAF88240485782" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4C99A629B29AF0C176E3F88240486D41" xlink:to="loc_dd_CropProtectionMember_6FEAD7F1D13AB48F76FAF88240485782" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_98F1B60FC2E9946E6992F882404873EB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_32CC04A7E935C9C5B42BF88240476614" xlink:to="loc_srt_StatementGeographicalAxis_98F1B60FC2E9946E6992F882404873EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_98F1B60FC2E9946E6992F882404873EB" xlink:to="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_98F1B60FC2E9946E6992F882404873EB" xlink:to="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NorthAmericaMember" xlink:label="loc_srt_NorthAmericaMember_662A6AB36AB5326A667EF88240492385" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:to="loc_srt_NorthAmericaMember_662A6AB36AB5326A667EF88240492385" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EMEAMember" xlink:label="loc_us-gaap_EMEAMember_E23F9091D2B3CB3A86FAF8824049FE2D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:to="loc_us-gaap_EMEAMember_E23F9091D2B3CB3A86FAF8824049FE2D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AsiaPacificMember" xlink:label="loc_srt_AsiaPacificMember_0DDE29354BDEF29892AFF8824049F3CA" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:to="loc_srt_AsiaPacificMember_0DDE29354BDEF29892AFF8824049F3CA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LatinAmericaMember" xlink:label="loc_srt_LatinAmericaMember_832114FA5F7F1DB3A896F882404A36B2" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_EDF00378D79778719D03F882404917F8" xlink:to="loc_srt_LatinAmericaMember_832114FA5F7F1DB3A896F882404A36B2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_9BACAF60E8A06EC42C43F882404B9703" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_1958A7DDB1EA5A34CB49F882404BBA9A" xlink:to="loc_us-gaap_Revenues_9BACAF60E8A06EC42C43F882404B9703" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueDisaggregationOfRevenueProductsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_16B533B8ADE47240DEB6F882405A6BDF" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_E63BECFDFE2F0532B125F882405689DF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_16B533B8ADE47240DEB6F882405A6BDF" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_E63BECFDFE2F0532B125F882405689DF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_238931DB54E206AF5CD7F88240573591" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_E63BECFDFE2F0532B125F882405689DF" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_238931DB54E206AF5CD7F88240573591" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_238931DB54E206AF5CD7F88240573591" xlink:to="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_238931DB54E206AF5CD7F88240573591" xlink:to="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_0B0B6C5667FA23AEFF55F8824057944A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB" xlink:to="loc_dd_SeedMember_0B0B6C5667FA23AEFF55F8824057944A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_C3606371DB78409AD135F88240589731" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_9468982503011788DE18F8824057DCEB" xlink:to="loc_dd_CropProtectionMember_C3606371DB78409AD135F88240589731" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_4CC76F3BD9AA8C4FD282F8824058CBA8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_E63BECFDFE2F0532B125F882405689DF" xlink:to="loc_srt_ProductOrServiceAxis_4CC76F3BD9AA8C4FD282F8824058CBA8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_4CC76F3BD9AA8C4FD282F8824058CBA8" xlink:to="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_4CC76F3BD9AA8C4FD282F8824058CBA8" xlink:to="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CornMember" xlink:label="loc_dd_CornMember_79E808FEC2A5BCA69C78F882405858A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_CornMember_79E808FEC2A5BCA69C78F882405858A8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SoybeanMember" xlink:label="loc_dd_SoybeanMember_A6363D5DB4B883677054F8824058F499" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_SoybeanMember_A6363D5DB4B883677054F8824058F499" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtheroilseedsMember" xlink:label="loc_dd_OtheroilseedsMember_4B674B0E265EE30338A7F8824059A180" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_OtheroilseedsMember_4B674B0E265EE30338A7F8824059A180" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherMember" xlink:label="loc_dd_OtherMember_6747ACAFF6385CE35C43F8824059894F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_OtherMember_6747ACAFF6385CE35C43F8824059894F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HerbicidesMember" xlink:label="loc_dd_HerbicidesMember_30B65C2F69E6853F68B3F88240595373" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_HerbicidesMember_30B65C2F69E6853F68B3F88240595373" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InsecticidesMember" xlink:label="loc_dd_InsecticidesMember_8A81522B529CDDC2D98FF882405A0EC1" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_InsecticidesMember_8A81522B529CDDC2D98FF882405A0EC1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_FungicidesMember" xlink:label="loc_dd_FungicidesMember_C11B6F93B146808E6E84F882405A74CB" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_600F8B551516836119F6F88240588BAC" xlink:to="loc_dd_FungicidesMember_C11B6F93B146808E6E84F882405A74CB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6BA7D54C1E1B6D0ED311F882405A897B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_16B533B8ADE47240DEB6F882405A6BDF" xlink:to="loc_us-gaap_Revenues_6BA7D54C1E1B6D0ED311F882405A897B" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_123F6A9E026902D8F810F882409C7412" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_8DC8B66C350FDD6769E5F882409B6BE1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_123F6A9E026902D8F810F882409C7412" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_8DC8B66C350FDD6769E5F882409B6BE1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_C9BFA7D82BF5E2739595F882409B20A2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_8DC8B66C350FDD6769E5F882409B6BE1" xlink:to="loc_srt_RangeAxis_C9BFA7D82BF5E2739595F882409B20A2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_C9BFA7D82BF5E2739595F882409B20A2" xlink:to="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_C9BFA7D82BF5E2739595F882409B20A2" xlink:to="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_E1C2F938FD6AA80FFD39F882409C6A23" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5" xlink:to="loc_srt_MinimumMember_E1C2F938FD6AA80FFD39F882409C6A23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_E51E60ECA7E1BDC2FC0FF882409C0748" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4772FBB64C1B9183C07CF882409B00C5" xlink:to="loc_srt_MaximumMember_E51E60ECA7E1BDC2FC0FF882409C0748" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_A5CAA38E6344FE88A87AF882409D0563" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_123F6A9E026902D8F810F882409C7412" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_A5CAA38E6344FE88A87AF882409D0563" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6A11068D07A2B193AEB3F882409D6A84" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_123F6A9E026902D8F810F882409C7412" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_6A11068D07A2B193AEB3F882409D6A84" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/RevenueTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/ScheduleIiValuationAndQualifyingAccountsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_955566B1899D11017BAE3F7EAACD4890" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_142DB837506338D31EA83F7EAABE1A6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_955566B1899D11017BAE3F7EAACD4890" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_142DB837506338D31EA83F7EAABE1A6A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_78FFA24B7C06DAD7F61C3F7EAABE2FFC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_142DB837506338D31EA83F7EAABE1A6A" xlink:to="loc_srt_RestatementAxis_78FFA24B7C06DAD7F61C3F7EAABE2FFC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_EE60438FEFC5AC0339EF3F7EAACD3F54_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_78FFA24B7C06DAD7F61C3F7EAABE2FFC" xlink:to="loc_srt_RestatementDomain_EE60438FEFC5AC0339EF3F7EAACD3F54_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_EE60438FEFC5AC0339EF3F7EAACD3F54" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_78FFA24B7C06DAD7F61C3F7EAABE2FFC" xlink:to="loc_srt_RestatementDomain_EE60438FEFC5AC0339EF3F7EAACD3F54" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_30595E153FDD12E415203F7EAACDB61E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_EE60438FEFC5AC0339EF3F7EAACD3F54" xlink:to="loc_dd_SuccessorPeriodMember_30595E153FDD12E415203F7EAACDB61E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_C8B8E10C15B3B41D66DA3F7EAACDF011" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_142DB837506338D31EA83F7EAABE1A6A" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_C8B8E10C15B3B41D66DA3F7EAACDF011" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_C8B8E10C15B3B41D66DA3F7EAACDF011" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_C8B8E10C15B3B41D66DA3F7EAACDF011" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllowanceForCreditLossMember" xlink:label="loc_us-gaap_AllowanceForCreditLossMember_A1BF7FD4BFCFCE7E454A3F7EAACD7848" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08" xlink:to="loc_us-gaap_AllowanceForCreditLossMember_A1BF7FD4BFCFCE7E454A3F7EAACD7848" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryValuationReserveMember" xlink:label="loc_us-gaap_InventoryValuationReserveMember_2FAF27AB550E4D88F68D3F7EAACD7DA0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08" xlink:to="loc_us-gaap_InventoryValuationReserveMember_2FAF27AB550E4D88F68D3F7EAACD7DA0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_5DE77C0435365B45238A3F7EAACD51B2" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_A32DECE6B42B8F199FBF3F7EAACD3C08" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_5DE77C0435365B45238A3F7EAACD51B2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_96A9D1A18300717BD6DA3F7EAACD2454" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_955566B1899D11017BAE3F7EAACD4890" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_96A9D1A18300717BD6DA3F7EAACD2454" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_17BF3A21E1F0872FF5093F7EAACD5B9A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_955566B1899D11017BAE3F7EAACD4890" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_17BF3A21E1F0872FF5093F7EAACD5B9A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_CC1A979E497793858E823F7EAACD4309" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_955566B1899D11017BAE3F7EAACD4890" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_CC1A979E497793858E823F7EAACD4309" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ScheduleIiValuationAndQualifyingAccountsNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingOtherItemsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems" xlink:label="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_E5F27D191BC91B41DF503095E886C872" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable" xlink:label="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_47243957EFFADBD544B13095E8849F0F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_E5F27D191BC91B41DF503095E886C872" xlink:to="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_47243957EFFADBD544B13095E8849F0F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_2132B1F6E7B5FF695D2B3095E885AD86" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_47243957EFFADBD544B13095E8849F0F" xlink:to="loc_srt_ConsolidationItemsAxis_2132B1F6E7B5FF695D2B3095E885AD86" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_2132B1F6E7B5FF695D2B3095E885AD86" xlink:to="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_2132B1F6E7B5FF695D2B3095E885AD86" xlink:to="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_5A3BCD5A24ED6E9BAC593095E8851495" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB" xlink:to="loc_us-gaap_OperatingSegmentsMember_5A3BCD5A24ED6E9BAC593095E8851495" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="loc_us-gaap_SegmentDiscontinuedOperationsMember_A23AF16365BFE077E3EA3095E88610CC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_349CA33BD1245FC2F51A3095E885C5FB" xlink:to="loc_us-gaap_SegmentDiscontinuedOperationsMember_A23AF16365BFE077E3EA3095E88610CC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_BF5E2AA839F88115FA7F3095E886E80D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_E5F27D191BC91B41DF503095E886C872" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_BF5E2AA839F88115FA7F3095E886E80D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_0E6496F38AECA1102DF83095E88670D8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_E5F27D191BC91B41DF503095E886C872" xlink:to="loc_us-gaap_EquityMethodInvestments_0E6496F38AECA1102DF83095E88670D8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3468FA851EB657620CFC3095E8867454" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_E5F27D191BC91B41DF503095E886C872" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3468FA851EB657620CFC3095E8867454" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingSegmentAssetsDetails" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingSegmentInformationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B030E766010028F76700F8823BB1FAE8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B030E766010028F76700F8823BB1FAE8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_DDAEB18744A998EE0481F8823BB11969" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B030E766010028F76700F8823BB1FAE8" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_DDAEB18744A998EE0481F8823BB11969" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_DDAEB18744A998EE0481F8823BB11969" xlink:to="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_DDAEB18744A998EE0481F8823BB11969" xlink:to="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_5647BD2CF4FBB26CCA4AF8823BB2FD04" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763" xlink:to="loc_dd_SeedMember_5647BD2CF4FBB26CCA4AF8823BB2FD04" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_C4F3AB9048BF1A60B0BAF8823BB2B22D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_7D012995C20EFF72E830F8823BB24763" xlink:to="loc_dd_CropProtectionMember_C4F3AB9048BF1A60B0BAF8823BB2B22D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_D529F5EB11183877EFA6F8823BB2BF41" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B030E766010028F76700F8823BB1FAE8" xlink:to="loc_srt_ConsolidationItemsAxis_D529F5EB11183877EFA6F8823BB2BF41" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_2C7C60FD14390C1338F6F8823BB3E951_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_D529F5EB11183877EFA6F8823BB2BF41" xlink:to="loc_srt_ConsolidationItemsDomain_2C7C60FD14390C1338F6F8823BB3E951_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_2C7C60FD14390C1338F6F8823BB3E951" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_D529F5EB11183877EFA6F8823BB2BF41" xlink:to="loc_srt_ConsolidationItemsDomain_2C7C60FD14390C1338F6F8823BB3E951" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_1E5D90A3CD6ED8A80F73F8823BB31AEC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_2C7C60FD14390C1338F6F8823BB3E951" xlink:to="loc_us-gaap_OperatingSegmentsMember_1E5D90A3CD6ED8A80F73F8823BB31AEC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_71C546598C89B6B2DB27F8823BB35B44" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_B030E766010028F76700F8823BB1FAE8" xlink:to="loc_srt_StatementScenarioAxis_71C546598C89B6B2DB27F8823BB35B44" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_64968B2C5BD5500CE1C7F8823BB3A5FA_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_71C546598C89B6B2DB27F8823BB35B44" xlink:to="loc_srt_ScenarioUnspecifiedDomain_64968B2C5BD5500CE1C7F8823BB3A5FA_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_64968B2C5BD5500CE1C7F8823BB3A5FA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_71C546598C89B6B2DB27F8823BB35B44" xlink:to="loc_srt_ScenarioUnspecifiedDomain_64968B2C5BD5500CE1C7F8823BB3A5FA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ReallocationofgoodwillMember" xlink:label="loc_dd_ReallocationofgoodwillMember_FD59F4DE364EE0CD6BB1F8823BB457A5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_64968B2C5BD5500CE1C7F8823BB3A5FA" xlink:to="loc_dd_ReallocationofgoodwillMember_FD59F4DE364EE0CD6BB1F8823BB457A5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_63BEE0866F03311EB927F8823BB4E5F1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_Revenues_63BEE0866F03311EB927F8823BB4E5F1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentoperatingEBITDA" xlink:label="loc_dd_SegmentoperatingEBITDA_BE79C713B1DB14C7ED26F8823BB406FE" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_dd_SegmentoperatingEBITDA_BE79C713B1DB14C7ED26F8823BB406FE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_6D2D3377958EBF5F43CEF8823BB584ED" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_6D2D3377958EBF5F43CEF8823BB584ED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentAssets" xlink:label="loc_dd_SegmentAssets_E9E1628AFFAEDA92CF30F8823BB5D690" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_dd_SegmentAssets_E9E1628AFFAEDA92CF30F8823BB5D690" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_8FE5FF198E15FAD6914DF8823BB52CF4" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_EquityMethodInvestments_8FE5FF198E15FAD6914DF8823BB52CF4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_C1969CAECE7F8FAF26EBF8823BB501FD" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_C1969CAECE7F8FAF26EBF8823BB501FD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_5170C67003E8AA7E9EDEF8823BB53680" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_ADFCA80BE8968612A372F8823BB490ED" xlink:to="loc_us-gaap_Goodwill_5170C67003E8AA7E9EDEF8823BB53680" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingSegmentReconciliationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_2C06B4ED4AEC69CD0F0E3095E8A71230" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:to="loc_srt_ConsolidationItemsAxis_2C06B4ED4AEC69CD0F0E3095E8A71230" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_192A8C921C854DF249043095E8A7C33F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_2C06B4ED4AEC69CD0F0E3095E8A71230" xlink:to="loc_srt_ConsolidationItemsDomain_192A8C921C854DF249043095E8A7C33F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_192A8C921C854DF249043095E8A7C33F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_2C06B4ED4AEC69CD0F0E3095E8A71230" xlink:to="loc_srt_ConsolidationItemsDomain_192A8C921C854DF249043095E8A7C33F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_E70BEF68B85C8CF118413095E8A7AA92" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_192A8C921C854DF249043095E8A7C33F" xlink:to="loc_us-gaap_OperatingSegmentsMember_E70BEF68B85C8CF118413095E8A7AA92" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_4D1C8A66A2515E38ECF83095E8A80A51" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_4D1C8A66A2515E38ECF83095E8A80A51" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CD272B135776CB607E3095E8A8B018_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_4D1C8A66A2515E38ECF83095E8A80A51" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CD272B135776CB607E3095E8A8B018_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CD272B135776CB607E3095E8A8B018" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_4D1C8A66A2515E38ECF83095E8A80A51" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CD272B135776CB607E3095E8A8B018" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_B6E30F7D8CF42A0A199D3095E8A870CA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CD272B135776CB607E3095E8A8B018" xlink:to="loc_dd_HedgingProgramMember_B6E30F7D8CF42A0A199D3095E8A870CA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_30A52630D860F99AD2133095E8AE44C5" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_30A52630D860F99AD2133095E8AE44C5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_30A52630D860F99AD2133095E8AE44C5" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_30A52630D860F99AD2133095E8AE44C5" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_BA2C1D84EBE265D4D72D3095E8AE3CFF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D" xlink:to="loc_dd_ArgentinepesodevaluationMember_BA2C1D84EBE265D4D72D3095E8AE3CFF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_CC464E679C8FD5E148B03095E8AEB4C8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_EE4F1D75D01529CC816A3095E8AE729D" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_CC464E679C8FD5E148B03095E8AEB4C8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_809A3AB39569A92460693095E8AF2C3F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DCDAA369C47A2185067B3095E8A664D0" xlink:to="loc_srt_StatementScenarioAxis_809A3AB39569A92460693095E8AF2C3F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_C4CCF91C3146A43555C73095E8AFDA8C_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_809A3AB39569A92460693095E8AF2C3F" xlink:to="loc_srt_ScenarioUnspecifiedDomain_C4CCF91C3146A43555C73095E8AFDA8C_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_C4CCF91C3146A43555C73095E8AFDA8C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_809A3AB39569A92460693095E8AF2C3F" xlink:to="loc_srt_ScenarioUnspecifiedDomain_C4CCF91C3146A43555C73095E8AFDA8C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_1EBF3753E88FA12651933095E8AF48EB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_C4CCF91C3146A43555C73095E8AFDA8C" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_1EBF3753E88FA12651933095E8AF48EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7F000F70C5708F5921243095E8AF7EAD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7F000F70C5708F5921243095E8AF7EAD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_AD0B07BF5E5FF15EA8DF3095E8B01F88" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_AD0B07BF5E5FF15EA8DF3095E8B01F88" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_65BFA3F9A6698D9DCC5C3095E8B0FA7E" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_65BFA3F9A6698D9DCC5C3095E8B0FA7E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_26E605E4A82DD9ED88AD3095E8B0238E" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_26E605E4A82DD9ED88AD3095E8B0238E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaap_InterestIncomeOperating_2CD59A9069B7B0B7430A3095E8B08D9B" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_InterestIncomeOperating_2CD59A9069B7B0B7430A3095E8B08D9B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_5187C1A2BAF73EBBED833095E8B04B28" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_InterestAndDebtExpense_5187C1A2BAF73EBBED833095E8B04B28" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_2222E6006EE6BCAC13493095E8B11C97" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_2222E6006EE6BCAC13493095E8B11C97" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Nonoperatingbenefitscostsnet" xlink:label="loc_dd_Nonoperatingbenefitscostsnet_3A07D441EA937A8FEE0D3095E8B19BA1" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_dd_Nonoperatingbenefitscostsnet_3A07D441EA937A8FEE0D3095E8B19BA1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_CC014596417F9089F0D23095E8B1B2A3" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_CC014596417F9089F0D23095E8B1B2A3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentReportingInformationOtherBenefitCharge" xlink:label="loc_dd_SegmentReportingInformationOtherBenefitCharge_A459883D73B971CAC69F3095E8B15589" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_dd_SegmentReportingInformationOtherBenefitCharge_A459883D73B971CAC69F3095E8B15589" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Proformaadjustments" xlink:label="loc_dd_Proformaadjustments_6DB32AEEBED3AFDC38EA3095E8B1FA49" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_dd_Proformaadjustments_6DB32AEEBED3AFDC38EA3095E8B1FA49" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentReportingReconcilingItemCorporateExpenses" xlink:label="loc_dd_SegmentReportingReconcilingItemCorporateExpenses_2F67E7937CE10CAB33B33095E8B12F08" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_dd_SegmentReportingReconcilingItemCorporateExpenses_2F67E7937CE10CAB33B33095E8B12F08" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentoperatingEBITDA" xlink:label="loc_dd_SegmentoperatingEBITDA_4DA02492E468C09402533095E8B2A3B1" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CEA5B23DB2F92E11839C3095E8AF631C" xlink:to="loc_dd_SegmentoperatingEBITDA_4DA02492E468C09402533095E8B2A3B1" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingSigItemsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_83151DE08C98641BB1163095E865570C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:to="loc_srt_StatementScenarioAxis_83151DE08C98641BB1163095E865570C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_0227F95000780EAD479B3095E865EAA1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_83151DE08C98641BB1163095E865570C" xlink:to="loc_srt_ScenarioUnspecifiedDomain_0227F95000780EAD479B3095E865EAA1_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_0227F95000780EAD479B3095E865EAA1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_83151DE08C98641BB1163095E865570C" xlink:to="loc_srt_ScenarioUnspecifiedDomain_0227F95000780EAD479B3095E865EAA1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_E48DD6E20286B239C2E93095E8658E57" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_0227F95000780EAD479B3095E865EAA1" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_E48DD6E20286B239C2E93095E8658E57" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_BB19C7B8D2D1A89B4CE43095E86529A1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_BB19C7B8D2D1A89B4CE43095E86529A1" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B02D3BF39A3BE58A57C53095E866C470_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_BB19C7B8D2D1A89B4CE43095E86529A1" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B02D3BF39A3BE58A57C53095E866C470_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B02D3BF39A3BE58A57C53095E866C470" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_BB19C7B8D2D1A89B4CE43095E86529A1" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B02D3BF39A3BE58A57C53095E866C470" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_9CDBEAFE8ECF85CD04103095E866FB07" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_B02D3BF39A3BE58A57C53095E866C470" xlink:to="loc_dd_HedgingProgramMember_9CDBEAFE8ECF85CD04103095E866FB07" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_267339AA6F0DBB28EFB23095E866A9B7" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_267339AA6F0DBB28EFB23095E866A9B7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_267339AA6F0DBB28EFB23095E866A9B7" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_267339AA6F0DBB28EFB23095E866A9B7" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_4D39C2246DE3C9A9E3013095E867A22D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6" xlink:to="loc_dd_ArgentinepesodevaluationMember_4D39C2246DE3C9A9E3013095E867A22D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_CD517369F1D8BF21E7FA3095E8674795" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_55764CD883ABBAC13BBD3095E866FEB6" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_CD517369F1D8BF21E7FA3095E8674795" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_D6846CB1EA99DC95B1903095E86779EC" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_D6846CB1EA99DC95B1903095E86779EC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_D6846CB1EA99DC95B1903095E86779EC" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_D6846CB1EA99DC95B1903095E86779EC" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SaleofJVMember" xlink:label="loc_dd_SaleofJVMember_CB32976DF42E83FEA9243095E8681B45" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:to="loc_dd_SaleofJVMember_CB32976DF42E83FEA9243095E8681B45" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AssetsaleMember" xlink:label="loc_dd_AssetsaleMember_C8679B981E6D005E91033095E86871E8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:to="loc_dd_AssetsaleMember_C8679B981E6D005E91033095E86871E8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeconsolidationofasubsidiaryMember" xlink:label="loc_dd_DeconsolidationofasubsidiaryMember_7F9FE22F69140EDDD0983095E86EAA5C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:to="loc_dd_DeconsolidationofasubsidiaryMember_7F9FE22F69140EDDD0983095E86EAA5C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherlossonsaleMember" xlink:label="loc_dd_OtherlossonsaleMember_BD3BA1349DC97FF242753095E86ECC06" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_7BE6EC6B43E73AB0B70D3095E867668B" xlink:to="loc_dd_OtherlossonsaleMember_BD3BA1349DC97FF242753095E86ECC06" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_8B57B26B96FA9367225E3095E86E205A" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_007563E4364DF1C4DD2E3095E864FB01" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_8B57B26B96FA9367225E3095E86E205A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8B57B26B96FA9367225E3095E86E205A" xlink:to="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8B57B26B96FA9367225E3095E86E205A" xlink:to="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeedMember" xlink:label="loc_dd_SeedMember_1AFA1C08F927D15065683095E86E3307" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607" xlink:to="loc_dd_SeedMember_1AFA1C08F927D15065683095E86E3307" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CropProtectionMember" xlink:label="loc_dd_CropProtectionMember_46FE4AA5D3A36C80EA9D3095E86F7D11" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607" xlink:to="loc_dd_CropProtectionMember_46FE4AA5D3A36C80EA9D3095E86F7D11" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_D7CD7D0A054091695FF53095E86FD719" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_F0A75E88376C2B37864B3095E86EF607" xlink:to="loc_us-gaap_CorporateNonSegmentMember_D7CD7D0A054091695FF53095E86FD719" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringSettlementAndImpairmentProvisions" xlink:label="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_6E5BB7995A3AFD5291EB3095E86F9EA7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_us-gaap_RestructuringSettlementAndImpairmentProvisions_6E5BB7995A3AFD5291EB3095E86F9EA7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationIntegrationAndSeparationRelatedCosts" xlink:label="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_A5BEF5F9048453B839CB3095E87060C2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_A5BEF5F9048453B839CB3095E87060C2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_F51B99735808326040593095E870F885" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_F51B99735808326040593095E870F885" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold" xlink:label="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_4636BEF342573291177B3095E870A33D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_dd_BusinessCombinationFairValueStepUpOfAcquiredInventoryAmountrecognizedinCostofGoodssold_4636BEF342573291177B3095E870A33D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_BC57E187D5FCA2718A4F3095E8704F23" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_BC57E187D5FCA2718A4F3095E8704F23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_4F33D7736B537B4012673095E87069FD" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_4F33D7736B537B4012673095E87069FD" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Integrationcosts" xlink:label="loc_dd_Integrationcosts_2BE63B65275F17975EC63095E871767E" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_dd_Integrationcosts_2BE63B65275F17975EC63095E871767E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SegmentReportingInformationOtherBenefitCharge" xlink:label="loc_dd_SegmentReportingInformationOtherBenefitCharge_BBA335E84E69324400473095E87158E1" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B502A0A6600BCF82DFB73095E86F086E" xlink:to="loc_dd_SegmentReportingInformationOtherBenefitCharge_BBA335E84E69324400473095E87158E1" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SegmentReportingTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilities" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesAvailableCommittedCreditFacilitiesNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_75E02D33AB44911C7204342224E46639" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_75E02D33AB44911C7204342224E46639" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_277D4A1EBB7523417F3F342224E4F4B9_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_75E02D33AB44911C7204342224E46639" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_277D4A1EBB7523417F3F342224E4F4B9_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_277D4A1EBB7523417F3F342224E4F4B9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_75E02D33AB44911C7204342224E46639" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_277D4A1EBB7523417F3F342224E4F4B9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RevolvingCreditFacilitiesdue2022Member" xlink:label="loc_dd_RevolvingCreditFacilitiesdue2022Member_6A8A9D241B67B1B40AD5342224E45896" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_277D4A1EBB7523417F3F342224E4F4B9" xlink:to="loc_dd_RevolvingCreditFacilitiesdue2022Member_6A8A9D241B67B1B40AD5342224E45896" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_580DC467E802C69504DF342224E4F63D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:to="loc_us-gaap_DebtInstrumentAxis_580DC467E802C69504DF342224E4F63D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_580DC467E802C69504DF342224E4F63D" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_580DC467E802C69504DF342224E4F63D" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_223BF2E9129EF5E46C4F3510EEED729F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_223BF2E9129EF5E46C4F3510EEED729F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TermLoanFacilitydue2020Member" xlink:label="loc_dd_TermLoanFacilitydue2020Member_DB0F4FBCB502BF9B1257342224E48C48" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6BEC169F9B8CD475086A342224E4B064" xlink:to="loc_dd_TermLoanFacilitydue2020Member_DB0F4FBCB502BF9B1257342224E48C48" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_C2D9E44E9443AAA2DC3B342224E4A2CE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:to="loc_us-gaap_CreditFacilityAxis_C2D9E44E9443AAA2DC3B342224E4A2CE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_C2D9E44E9443AAA2DC3B342224E4A2CE" xlink:to="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_C2D9E44E9443AAA2DC3B342224E4A2CE" xlink:to="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RevolvingCreditFacilitiesdue2024Member" xlink:label="loc_dd_RevolvingCreditFacilitiesdue2024Member_241D3D0BDE3164A5CAD7342224E4514A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F" xlink:to="loc_dd_RevolvingCreditFacilitiesdue2024Member_241D3D0BDE3164A5CAD7342224E4514A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TermLoanFacilitydue2020Member" xlink:label="loc_dd_TermLoanFacilitydue2020Member_060185FF7E3DC09BB560342224E4E461" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F" xlink:to="loc_dd_TermLoanFacilitydue2020Member_060185FF7E3DC09BB560342224E4E461" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RevolvingCreditFacilitiesdue2022Member" xlink:label="loc_dd_RevolvingCreditFacilitiesdue2022Member_7C249DB29524E48F6A45342224E42CD2" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_1EE5771AE8827C8592C6342224E4FB9F" xlink:to="loc_dd_RevolvingCreditFacilitiesdue2022Member_7C249DB29524E48F6A45342224E42CD2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_3860F8898DD26C5DA4CF342224E43657" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_3860F8898DD26C5DA4CF342224E43657" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_3860F8898DD26C5DA4CF342224E43657" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_3860F8898DD26C5DA4CF342224E43657" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TermLoanFacilitydue2020Member" xlink:label="loc_dd_TermLoanFacilitydue2020Member_3CF6EB84B8C7133788C1342224E46F02" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC" xlink:to="loc_dd_TermLoanFacilitydue2020Member_3CF6EB84B8C7133788C1342224E46F02" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeniorNoteFloatingRateDue2020Member" xlink:label="loc_dd_SeniorNoteFloatingRateDue2020Member_ABB182F1521B482E83EF342224E4914C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC" xlink:to="loc_dd_SeniorNoteFloatingRateDue2020Member_ABB182F1521B482E83EF342224E4914C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeniorNote2.20PercentDue2020Member" xlink:label="loc_dd_SeniorNote2.20PercentDue2020Member_379645E59086248D4D73342224E4401A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_046CA6BEF1FF5D1CD8B4342224E4EEAC" xlink:to="loc_dd_SeniorNote2.20PercentDue2020Member_379645E59086248D4D73342224E4401A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_0BD8B78534A269301166342224E4EBDB" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_41767EBA5E18BE54F84E342224E4DD44" xlink:to="loc_srt_StatementScenarioAxis_0BD8B78534A269301166342224E4EBDB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_A57FCB9D5A524DD9EB2A342224E4CE2F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_0BD8B78534A269301166342224E4EBDB" xlink:to="loc_srt_ScenarioUnspecifiedDomain_A57FCB9D5A524DD9EB2A342224E4CE2F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_A57FCB9D5A524DD9EB2A342224E4CE2F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_0BD8B78534A269301166342224E4EBDB" xlink:to="loc_srt_ScenarioUnspecifiedDomain_A57FCB9D5A524DD9EB2A342224E4CE2F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioForecastMember" xlink:label="loc_srt_ScenarioForecastMember_4D08F0D7131BB42E3126342224E4ECE9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_A57FCB9D5A524DD9EB2A342224E4CE2F" xlink:to="loc_srt_ScenarioForecastMember_4D08F0D7131BB42E3126342224E4ECE9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_045E95E2834394F53AB2342224E4AD8D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_045E95E2834394F53AB2342224E4AD8D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_621A76E086636722EB6A342224E46A30" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_621A76E086636722EB6A342224E46A30" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_852333DCD108075163ED342224E4D29A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_us-gaap_DebtInstrumentTerm_852333DCD108075163ED342224E4D29A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LineofCreditFacilityNumberofBorrowings" xlink:label="loc_dd_LineofCreditFacilityNumberofBorrowings_411CFA9817279A8718CD342224E47ECD" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_dd_LineofCreditFacilityNumberofBorrowings_411CFA9817279A8718CD342224E47ECD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RatioOfIndebtednessToNetCapital1" xlink:label="loc_us-gaap_RatioOfIndebtednessToNetCapital1_8B03483F62F1D0B57B7A342224E45BD4" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_9470EB6897FCD3C6ED78342224E4AF79" xlink:to="loc_us-gaap_RatioOfIndebtednessToNetCapital1_8B03483F62F1D0B57B7A342224E45BD4" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesDebtRedemptionsRepaymentsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_B0B6EDC9E2266E0B746B342224D4A52E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:to="loc_dd_CompanyAxis_B0B6EDC9E2266E0B746B342224D4A52E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_9F34D8F441FD8B88E606342224D4A9E4_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_B0B6EDC9E2266E0B746B342224D4A52E" xlink:to="loc_dd_CortevaDomain_9F34D8F441FD8B88E606342224D4A9E4_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_9F34D8F441FD8B88E606342224D4A9E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_B0B6EDC9E2266E0B746B342224D4A52E" xlink:to="loc_dd_CortevaDomain_9F34D8F441FD8B88E606342224D4A9E4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_91402BB828414B2D089C342224D45B8B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_9F34D8F441FD8B88E606342224D4A9E4" xlink:to="loc_dd_EIDMember_91402BB828414B2D089C342224D45B8B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_B40D4FE821732DC2C806342224D42346" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:to="loc_us-gaap_CreditFacilityAxis_B40D4FE821732DC2C806342224D42346" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_15756FC241AA5CC29F34342224D4ADED_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_B40D4FE821732DC2C806342224D42346" xlink:to="loc_us-gaap_CreditFacilityDomain_15756FC241AA5CC29F34342224D4ADED_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_15756FC241AA5CC29F34342224D4ADED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_B40D4FE821732DC2C806342224D42346" xlink:to="loc_us-gaap_CreditFacilityDomain_15756FC241AA5CC29F34342224D4ADED" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TenderNotesMember" xlink:label="loc_dd_TenderNotesMember_5381D1E526C97150F915342224D4856B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_15756FC241AA5CC29F34342224D4ADED" xlink:to="loc_dd_TenderNotesMember_5381D1E526C97150F915342224D4856B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_80866A73C8D73A140AC6342224D48A09" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:to="loc_srt_StatementScenarioAxis_80866A73C8D73A140AC6342224D48A09" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_38B67EEA9C6C9E954457342224D40C73_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_80866A73C8D73A140AC6342224D48A09" xlink:to="loc_srt_ScenarioUnspecifiedDomain_38B67EEA9C6C9E954457342224D40C73_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_38B67EEA9C6C9E954457342224D40C73" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_80866A73C8D73A140AC6342224D48A09" xlink:to="loc_srt_ScenarioUnspecifiedDomain_38B67EEA9C6C9E954457342224D40C73" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_7B0B3F52A41F2145DE51342224D495F7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_38B67EEA9C6C9E954457342224D40C73" xlink:to="loc_us-gaap_LoansPayableMember_7B0B3F52A41F2145DE51342224D495F7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_10DC6F4595A9FF64052E342224D43C6D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_10DC6F4595A9FF64052E342224D43C6D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_10DC6F4595A9FF64052E342224D43C6D" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_10DC6F4595A9FF64052E342224D43C6D" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorSubordinatedNotesMember" xlink:label="loc_us-gaap_SeniorSubordinatedNotesMember_25E294010674E0E46139342224D43C71" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_us-gaap_SeniorSubordinatedNotesMember_25E294010674E0E46139342224D43C71" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.625Notesdue2020Member" xlink:label="loc_dd_A4.625Notesdue2020Member_3F88D79127A8951A1D31342224D4E522" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A4.625Notesdue2020Member_3F88D79127A8951A1D31342224D4E522" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.625Notesdue2021Member" xlink:label="loc_dd_A3.625Notesdue2021Member_E984ACB7551FDC2D7647342224D43E35" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A3.625Notesdue2021Member_E984ACB7551FDC2D7647342224D43E35" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.250Notesdue2021Member" xlink:label="loc_dd_A4.250Notesdue2021Member_6466575A09561E5F6137342224D4EECF" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A4.250Notesdue2021Member_6466575A09561E5F6137342224D4EECF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A2.800Notesdue2023Member" xlink:label="loc_dd_A2.800Notesdue2023Member_C84B249F871621B7F104342224D41D7B" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A2.800Notesdue2023Member_C84B249F871621B7F104342224D41D7B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A6.500Debenturesdue2028Member" xlink:label="loc_dd_A6.500Debenturesdue2028Member_D6A80C5B144C936141AB342224D499DB" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A6.500Debenturesdue2028Member_D6A80C5B144C936141AB342224D499DB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A5.600SeniorNotesdue2036Member" xlink:label="loc_dd_A5.600SeniorNotesdue2036Member_11E73C9E5C2FD5498BDC342224D43204" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A5.600SeniorNotesdue2036Member_11E73C9E5C2FD5498BDC342224D43204" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.900Notesdue2041Member" xlink:label="loc_dd_A4.900Notesdue2041Member_18B42ABA0EE28007F16A342224D4BC47" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A4.900Notesdue2041Member_18B42ABA0EE28007F16A342224D4BC47" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.150Notesdue2043Member" xlink:label="loc_dd_A4.150Notesdue2043Member_8336943FE2DB37F8707D342224D4863B" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_A4.150Notesdue2043Member_8336943FE2DB37F8707D342224D4863B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeniorNote2.20PercentDue2020Member" xlink:label="loc_dd_SeniorNote2.20PercentDue2020Member_86F2E6DF6F70CE7A417C342224D4B3F0" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_SeniorNote2.20PercentDue2020Member_86F2E6DF6F70CE7A417C342224D4B3F0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SeniorNoteFloatingRateDue2020Member" xlink:label="loc_dd_SeniorNoteFloatingRateDue2020Member_369878B62E092DAC75DF342224D484DC" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_SeniorNoteFloatingRateDue2020Member_369878B62E092DAC75DF342224D484DC" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SMRnotesMember" xlink:label="loc_dd_SMRnotesMember_0C0EC232234CD849D131342224D45471" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_DD4E4FBA790428A05DD8342224D4CCD7" xlink:to="loc_dd_SMRnotesMember_0C0EC232234CD849D131342224D45471" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_5151DF4F49BEBBFD6005342224D4296C" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_A629B8EFADC043039C04342224D47B30" xlink:to="loc_us-gaap_DebtInstrumentAxis_5151DF4F49BEBBFD6005342224D4296C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9B99359C7183B4EE1E0B342224D44A81_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5151DF4F49BEBBFD6005342224D4296C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9B99359C7183B4EE1E0B342224D44A81_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9B99359C7183B4EE1E0B342224D44A81" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5151DF4F49BEBBFD6005342224D4296C" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9B99359C7183B4EE1E0B342224D44A81" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TermLoanFacilitydue2020Member" xlink:label="loc_dd_TermLoanFacilitydue2020Member_3CC7BBF082BB7BB84C5A342224D4622D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9B99359C7183B4EE1E0B342224D44A81" xlink:to="loc_dd_TermLoanFacilitydue2020Member_3CC7BBF082BB7BB84C5A342224D4622D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_D3B95FD6E2BF8B7CFE4E342224D49F45" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentTerm_D3B95FD6E2BF8B7CFE4E342224D49F45" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermTransitionBondCurrentAndNoncurrent" xlink:label="loc_us-gaap_LongtermTransitionBondCurrentAndNoncurrent_1465F3AD860695E6578B342224D4ED28" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_LongtermTransitionBondCurrentAndNoncurrent_1465F3AD860695E6578B342224D4ED28" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_636AD950764CED721DD8342224D454BE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_636AD950764CED721DD8342224D454BE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_CEF569C40778BFF0E4ED342224D47D9A" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_CEF569C40778BFF0E4ED342224D47D9A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TenderOfferforDebtSecurities" xlink:label="loc_dd_TenderOfferforDebtSecurities_2F457B9DC1BD4947B263342224D40387" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_dd_TenderOfferforDebtSecurities_2F457B9DC1BD4947B263342224D40387" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_E9A94FF96819BAF0FD60342224D43A94" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_E9A94FF96819BAF0FD60342224D43A94" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RepaymentsofLongtermDebtincludingbreakagefeesandallapplicableaccruedandunpaidinterest" xlink:label="loc_dd_RepaymentsofLongtermDebtincludingbreakagefeesandallapplicableaccruedandunpaidinterest_DE6BFA8F330FCFCC1813342224D4463F" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_dd_RepaymentsofLongtermDebtincludingbreakagefeesandallapplicableaccruedandunpaidinterest_DE6BFA8F330FCFCC1813342224D4463F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_DEC71039CDE43D064548342224D478AA" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_DEC71039CDE43D064548342224D478AA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_439260955DEA06F38953342224D46F5E" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_439260955DEA06F38953342224D46F5E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_374E17EEC73C24D34C3E34FA411100E2" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_LineOfCredit_374E17EEC73C24D34C3E34FA411100E2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_513673CCF14B6390808D342224D43566" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_513673CCF14B6390808D342224D43566" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRepurchaseAmount" xlink:label="loc_us-gaap_DebtInstrumentRepurchaseAmount_44A63CA070BE71254C01342224D4AC05" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06927D43B0AC33578E68342224D4AA48" xlink:to="loc_us-gaap_DebtInstrumentRepurchaseAmount_44A63CA070BE71254C01342224D4AC05" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesLongTermDebtDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_86D61577C74831070A9931BDB917F359" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_DebtInstrumentTable_86D61577C74831070A9931BDB917F359" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8F82E6CECEF0F8967D4131BDB9176B11" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_86D61577C74831070A9931BDB917F359" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8F82E6CECEF0F8967D4131BDB9176B11" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2E2A3CD3CE3FDBBD1F0D31BDB917920D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8F82E6CECEF0F8967D4131BDB9176B11" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2E2A3CD3CE3FDBBD1F0D31BDB917920D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2E2A3CD3CE3FDBBD1F0D31BDB917920D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8F82E6CECEF0F8967D4131BDB9176B11" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2E2A3CD3CE3FDBBD1F0D31BDB917920D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_8952826A6796C633DC6631BDB917A442" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2E2A3CD3CE3FDBBD1F0D31BDB917920D" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_8952826A6796C633DC6631BDB917A442" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_9021F79F79018654ECA931BDB917878B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_86D61577C74831070A9931BDB917F359" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_9021F79F79018654ECA931BDB917878B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_9021F79F79018654ECA931BDB917878B" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_9021F79F79018654ECA931BDB917878B" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_190A5FBBD71ADBA0CAEF31BDB917FCEB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D" xlink:to="loc_us-gaap_LoansPayableMember_190A5FBBD71ADBA0CAEF31BDB917FCEB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MediumTermNotesMember" xlink:label="loc_us-gaap_MediumTermNotesMember_45208BEDADB9A879259D31BDB9172081" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_935F7FCDDF578E93493731BDB9178E1D" xlink:to="loc_us-gaap_MediumTermNotesMember_45208BEDADB9A879259D31BDB9172081" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_8085A554D0C4EF4CD5BC31BDB917F7C3" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_86D61577C74831070A9931BDB917F359" xlink:to="loc_us-gaap_DebtInstrumentAxis_8085A554D0C4EF4CD5BC31BDB917F7C3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_8085A554D0C4EF4CD5BC31BDB917F7C3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_8085A554D0C4EF4CD5BC31BDB917F7C3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityCurrentYearMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityCurrentYearMember_D06A73D518EEB9B96EC731BDB917A586" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityCurrentYearMember_D06A73D518EEB9B96EC731BDB917A586" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityYearOneMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearOneMember_AA0F46F67CCE9141F7BE31BDB917CEC5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearOneMember_AA0F46F67CCE9141F7BE31BDB917CEC5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityYearTwoMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearTwoMember_3B3042D08414D94522DF31BDB91795A9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearTwoMember_3B3042D08414D94522DF31BDB91795A9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityYearThreeMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearThreeMember_4159BA57AF459A1DD65C31BDB91762C7" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearThreeMember_4159BA57AF459A1DD65C31BDB91762C7" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityYearFiveMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearFiveMember_7B2FBC8F4E84E7714FBF31BDB9179FA3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearFiveMember_7B2FBC8F4E84E7714FBF31BDB9179FA3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_PromissoryNotesandDebenturesFinalMaturityYearSixandThereafterMember" xlink:label="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearSixandThereafterMember_DFF29B5BF4FC51AD680E31BDB917D9E4" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_PromissoryNotesandDebenturesFinalMaturityYearSixandThereafterMember_DFF29B5BF4FC51AD680E31BDB917D9E4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TermLoanFacilitydue2020Member" xlink:label="loc_dd_TermLoanFacilitydue2020Member_0065B1EA82773929B64431BDB917FFF2" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_TermLoanFacilitydue2020Member_0065B1EA82773929B64431BDB917FFF2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherLoansMember" xlink:label="loc_dd_OtherLoansMember_1EBEC3F4CF7974E432EC31BDB917F8B0" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_OtherLoansMember_1EBEC3F4CF7974E432EC31BDB917F8B0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyLoansMember" xlink:label="loc_dd_ForeignCurrencyLoansMember_28F8F490B52F97B2BAF731BDB917889F" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_dd_ForeignCurrencyLoansMember_28F8F490B52F97B2BAF731BDB917889F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MediumTermNotesMember" xlink:label="loc_us-gaap_MediumTermNotesMember_203B2FA22900753480B731BDB917B9E7" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6C82965FCE5E907CD02431BDB9174757" xlink:to="loc_us-gaap_MediumTermNotesMember_203B2FA22900753480B731BDB917B9E7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_1A6C672B0866493C6ED431BDB917E7FD" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_1A6C672B0866493C6ED431BDB917E7FD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_116B522E5D14D6E23F7B31BDB917F6D5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_116B522E5D14D6E23F7B31BDB917F6D5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_6F69A2E5AE1A75B5104E31BDB917AC70" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_6F69A2E5AE1A75B5104E31BDB917AC70" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_E0415B9CB615B446C9A931BDB9174FB2" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_E0415B9CB615B446C9A931BDB9174FB2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_C30048C661350B00267D31BDB917C638" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_LongTermDebtCurrent_C30048C661350B00267D31BDB917C638" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_7E1491E8BA06E51153F231BDB917BD50" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_7E1491E8BA06E51153F231BDB917BD50" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_F267C579D50D6DF624E231BDB917D6DF" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_0AA785F1746BD26E1CC231BDB917764D" xlink:to="loc_us-gaap_LongTermDebtFairValue_F267C579D50D6DF624E231BDB917D6DF" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesShortTermBorrowingsAndCapitalLeaseObligationsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_B9F9895CE8951013C877205DEEFEFECE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_B9F9895CE8951013C877205DEEFEFECE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_FE9B326D70FF46372213205DEEFEE6C9" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_B9F9895CE8951013C877205DEEFEFECE" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_FE9B326D70FF46372213205DEEFEE6C9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_FE9B326D70FF46372213205DEEFEE6C9" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_FE9B326D70FF46372213205DEEFEE6C9" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="loc_us-gaap_CommercialPaperMember_281D93D4211C83120F46205DEEFFF275" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5" xlink:to="loc_us-gaap_CommercialPaperMember_281D93D4211C83120F46205DEEFFF275" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OtherloansvariouscurrenciesMember" xlink:label="loc_dd_OtherloansvariouscurrenciesMember_CCFBA3F4BE5F8D2AABB7205DEEFF6142" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_6E57C2C3E43390557C6A205DEEFF81E5" xlink:to="loc_dd_OtherloansvariouscurrenciesMember_CCFBA3F4BE5F8D2AABB7205DEEFF6142" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_2599C4BA391A92D4B900205DEF0090AE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_ShortTermBorrowings_2599C4BA391A92D4B900205DEF0090AE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_FF43A61CA6F5AEAEDD25205DEF0080D9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_LongTermDebtCurrent_FF43A61CA6F5AEAEDD25205DEF0080D9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_F99A8162E7041BC48334205DEF00EA81" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_F99A8162E7041BC48334205DEF00EA81" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_DE3585806F69DC657C34205DEF00E7D4" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_DebtCurrent_DE3585806F69DC657C34205DEF00E7D4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_64AD0948AB82C3A8648E205DEF01123F" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_11D0CDBE0F34974E3069205DEEFF4009" xlink:to="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_64AD0948AB82C3A8648E205DEF01123F" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/ShortTermBorrowingsLongTermDebtAndAvailableCreditFacilitiesUncommittedCreditFacilitiesAndOutstandingLettersOfCreditDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8EBBE0218925CD053A71F8823DE2062B" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8EBBE0218925CD053A71F8823DE2062B" xlink:to="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_780341F3CFBC800EDF63F8823DE0FD6A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_780341F3CFBC800EDF63F8823DE0FD6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_659CB888E03C6D5FABB8F8823DE0B016_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_780341F3CFBC800EDF63F8823DE0FD6A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_659CB888E03C6D5FABB8F8823DE0B016_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_659CB888E03C6D5FABB8F8823DE0B016" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_780341F3CFBC800EDF63F8823DE0FD6A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_659CB888E03C6D5FABB8F8823DE0B016" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_054921699A39B7A561C0F8823DE09720" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:to="loc_us-gaap_DebtInstrumentAxis_054921699A39B7A561C0F8823DE09720" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_BAD497809F0C08811FBAF8823DE01F1A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_054921699A39B7A561C0F8823DE09720" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_BAD497809F0C08811FBAF8823DE01F1A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_BAD497809F0C08811FBAF8823DE01F1A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_054921699A39B7A561C0F8823DE09720" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_BAD497809F0C08811FBAF8823DE01F1A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_D0B334C7AC0A2878FF51F8823DE15642" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:to="loc_us-gaap_VariableRateAxis_D0B334C7AC0A2878FF51F8823DE15642" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_9A4747DD0DE2C66B7D9FF8823DE1D941_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_D0B334C7AC0A2878FF51F8823DE15642" xlink:to="loc_us-gaap_VariableRateDomain_9A4747DD0DE2C66B7D9FF8823DE1D941_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_9A4747DD0DE2C66B7D9FF8823DE1D941" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_D0B334C7AC0A2878FF51F8823DE15642" xlink:to="loc_us-gaap_VariableRateDomain_9A4747DD0DE2C66B7D9FF8823DE1D941" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_F395E23F7B448BDCF74AF8823DE1E3D8" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_F395E23F7B448BDCF74AF8823DE1E3D8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_8C4F1C99CD93E61FE4ECF8823DE1CB64_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_F395E23F7B448BDCF74AF8823DE1E3D8" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_8C4F1C99CD93E61FE4ECF8823DE1CB64_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_8C4F1C99CD93E61FE4ECF8823DE1CB64" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_F395E23F7B448BDCF74AF8823DE1E3D8" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_8C4F1C99CD93E61FE4ECF8823DE1CB64" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_3537C3BE7273AB58715FF8823DE2E605" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1ED9074B7A59573BCD68F8823DDFFB44" xlink:to="loc_srt_RangeAxis_3537C3BE7273AB58715FF8823DE2E605" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_2A848CCDA65577FBBF13F8823DE2D930_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_3537C3BE7273AB58715FF8823DE2E605" xlink:to="loc_srt_RangeMember_2A848CCDA65577FBBF13F8823DE2D930_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_2A848CCDA65577FBBF13F8823DE2D930" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_3537C3BE7273AB58715FF8823DE2E605" xlink:to="loc_srt_RangeMember_2A848CCDA65577FBBF13F8823DE2D930" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_LineOfCreditFacilityRemainingBorrowingCapacityUncommittedAmount" xlink:label="loc_dd_LineOfCreditFacilityRemainingBorrowingCapacityUncommittedAmount_8ECE78EA3183C54E0EA8F8823DE24E20" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8EBBE0218925CD053A71F8823DE2062B" xlink:to="loc_dd_LineOfCreditFacilityRemainingBorrowingCapacityUncommittedAmount_8ECE78EA3183C54E0EA8F8823DE24E20" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_6A17824524BA3678D10CF8823DE2C00E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8EBBE0218925CD053A71F8823DE2062B" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_6A17824524BA3678D10CF8823DE2C00E" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensation" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensationRestrictedStockUnitsAndPerformanceDeferredStockDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_0A09BB228051EEDBD0403FBFB36F2A98" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_us-gaap_PlanNameAxis_0A09BB228051EEDBD0403FBFB36F2A98" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_0A09BB228051EEDBD0403FBFB36F2A98" xlink:to="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_0A09BB228051EEDBD0403FBFB36F2A98" xlink:to="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OIPMember" xlink:label="loc_dd_OIPMember_812816D010FDC62EB0373FBFB36F24A3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5" xlink:to="loc_dd_OIPMember_812816D010FDC62EB0373FBFB36F24A3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIPMember" xlink:label="loc_dd_EIPMember_ADF8F303BC05065080143FBFB36FFF8F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5" xlink:to="loc_dd_EIPMember_ADF8F303BC05065080143FBFB36FFF8F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowMember" xlink:label="loc_dd_DowMember_7781601116489D49CBBE3FBFB36FCE9F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_223BCA93D39F30DD738A3FBFB36F9EC5" xlink:to="loc_dd_DowMember_7781601116489D49CBBE3FBFB36FCE9F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_6FB0CBA1A826284917CC3FBFB36FDA41" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_us-gaap_VestingAxis_6FB0CBA1A826284917CC3FBFB36FDA41" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_6FB0CBA1A826284917CC3FBFB36FDA41" xlink:to="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_6FB0CBA1A826284917CC3FBFB36FDA41" xlink:to="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_B8F7B0589ECFEA284CAC3FBFB371A971" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02" xlink:to="loc_srt_MinimumMember_B8F7B0589ECFEA284CAC3FBFB371A971" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_5ADCC0BE86771A7D7A613FBFB37118EB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_BDFD9FFC68DE02C3B4F03FBFB3712C02" xlink:to="loc_srt_MaximumMember_5ADCC0BE86771A7D7A613FBFB37118EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="loc_srt_TitleOfIndividualAxis_DEC9256352AC0E8DA3103FBFB3718372" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_srt_TitleOfIndividualAxis_DEC9256352AC0E8DA3103FBFB3718372" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_4BCB57E6BA8D362ECDAC3FBFB372B359_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_DEC9256352AC0E8DA3103FBFB3718372" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_4BCB57E6BA8D362ECDAC3FBFB372B359_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_4BCB57E6BA8D362ECDAC3FBFB372B359" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_DEC9256352AC0E8DA3103FBFB3718372" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_4BCB57E6BA8D362ECDAC3FBFB372B359" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ManagementMember" xlink:label="loc_srt_ManagementMember_90FD515AE134746BB4A43FBFB372E46A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_4BCB57E6BA8D362ECDAC3FBFB372B359" xlink:to="loc_srt_ManagementMember_90FD515AE134746BB4A43FBFB372E46A" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1D127B45B1BD6AEEB28C3FBFB372D27D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_dei_LegalEntityAxis_1D127B45B1BD6AEEB28C3FBFB372D27D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_3747FC7C66489795C46C3FBFB37289E3_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1D127B45B1BD6AEEB28C3FBFB372D27D" xlink:to="loc_dd_DuPontDomain_3747FC7C66489795C46C3FBFB37289E3_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_3747FC7C66489795C46C3FBFB37289E3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1D127B45B1BD6AEEB28C3FBFB372D27D" xlink:to="loc_dd_DuPontDomain_3747FC7C66489795C46C3FBFB37289E3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_507365D1E9909051056B3FBFB373303A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_3747FC7C66489795C46C3FBFB37289E3" xlink:to="loc_dd_CortevaMember_507365D1E9909051056B3FBFB373303A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_AF04E235DE392F4E35B83FBFB373D709" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_srt_StatementScenarioAxis_AF04E235DE392F4E35B83FBFB373D709" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_0ACE23FA828A0C572C333FBFB3739E81_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_AF04E235DE392F4E35B83FBFB373D709" xlink:to="loc_srt_ScenarioUnspecifiedDomain_0ACE23FA828A0C572C333FBFB3739E81_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_0ACE23FA828A0C572C333FBFB3739E81" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_AF04E235DE392F4E35B83FBFB373D709" xlink:to="loc_srt_ScenarioUnspecifiedDomain_0ACE23FA828A0C572C333FBFB3739E81" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InternalReorganizationMember" xlink:label="loc_dd_InternalReorganizationMember_91F4627657281550F7093FBFB374FF27" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_0ACE23FA828A0C572C333FBFB3739E81" xlink:to="loc_dd_InternalReorganizationMember_91F4627657281550F7093FBFB374FF27" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_32CEE8A53A553DD5B7BC3FBFB3741A07" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_us-gaap_AwardTypeAxis_32CEE8A53A553DD5B7BC3FBFB3741A07" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_32CEE8A53A553DD5B7BC3FBFB3741A07" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_32CEE8A53A553DD5B7BC3FBFB3741A07" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RSUsandPSUsOIPDomainDomain" xlink:label="loc_dd_RSUsandPSUsOIPDomainDomain_133FE4424896BFE07A3D3FBFB37444EB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_dd_RSUsandPSUsOIPDomainDomain_133FE4424896BFE07A3D3FBFB37444EB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RSUsandPSUsEIPDomain" xlink:label="loc_dd_RSUsandPSUsEIPDomain_77105FDC152EB20C62FB3FBFB375A6B7" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_dd_RSUsandPSUsEIPDomain_77105FDC152EB20C62FB3FBFB375A6B7" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_CC58CC3AACE6F190BD023FBFB3754FFE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_CC58CC3AACE6F190BD023FBFB3754FFE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_B2761F96A9535C62C4313FBFB375D40B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_us-gaap_PerformanceSharesMember_B2761F96A9535C62C4313FBFB375D40B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_RestrictedStockUnitsandPerformanceDeferredStockUnitsMember" xlink:label="loc_dd_RestrictedStockUnitsandPerformanceDeferredStockUnitsMember_013D7E4B528E0C0A727F3FBFB3753AD3" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_dd_RestrictedStockUnitsandPerformanceDeferredStockUnitsMember_013D7E4B528E0C0A727F3FBFB3753AD3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIPMember" xlink:label="loc_dd_EIPMember_1B4BE8AABCD419524EF03FBFB375837E" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_dd_EIPMember_1B4BE8AABCD419524EF03FBFB375837E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OIPMember" xlink:label="loc_dd_OIPMember_0FC5D2435AD3CB2548243FBFB375ACC8" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_543283EBA6CEB882A7813FBFB3744D1F" xlink:to="loc_dd_OIPMember_0FC5D2435AD3CB2548243FBFB375ACC8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_D3557749631FCA69D2613FBFB37648D5" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_78F5E71E2EF59F3D2BB83FBFB36E9995" xlink:to="loc_srt_RangeAxis_D3557749631FCA69D2613FBFB37648D5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_D3557749631FCA69D2613FBFB37648D5" xlink:to="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_D3557749631FCA69D2613FBFB37648D5" xlink:to="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_3943ED333CEAAAF877143FBFB376EC61" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA" xlink:to="loc_srt_MinimumMember_3943ED333CEAAAF877143FBFB376EC61" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_2A49C9E684245376B85A3FBFB376C7F9" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1873287485DEF1219DA73FBFB37635CA" xlink:to="loc_srt_MaximumMember_2A49C9E684245376B85A3FBFB376C7F9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_DE21C8D285A9B1B034503FBFB37775CA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_DE21C8D285A9B1B034503FBFB37775CA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ShareBasedCompensationArrangementbyShareBasedPaymentAwardEquityAwardConversionRatio" xlink:label="loc_dd_ShareBasedCompensationArrangementbyShareBasedPaymentAwardEquityAwardConversionRatio_1F89701543F622143CC33FBFB37711D0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_ShareBasedCompensationArrangementbyShareBasedPaymentAwardEquityAwardConversionRatio_1F89701543F622143CC33FBFB37711D0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_088172AEE1C81AE072363FBFB377F82C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_088172AEE1C81AE072363FBFB377F82C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Sharebasedcompensationarrangementbysharebasedpaymentawardequityinstrumentsotherthanoptionsactualawardsgrantedpercentageofperformancetarget" xlink:label="loc_dd_Sharebasedcompensationarrangementbysharebasedpaymentawardequityinstrumentsotherthanoptionsactualawardsgrantedpercentageofperformancetarget_F29A34A06498BC13E1FE3FBFB37726E0" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_Sharebasedcompensationarrangementbysharebasedpaymentawardequityinstrumentsotherthanoptionsactualawardsgrantedpercentageofperformancetarget_F29A34A06498BC13E1FE3FBFB37726E0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_C52C1CACCEA0914FB1DE3FBFB3780456" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_C52C1CACCEA0914FB1DE3FBFB3780456" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_E2371F4A49004A1FBC4F3FBFB378ED41" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_E2371F4A49004A1FBC4F3FBFB378ED41" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_821D94A2C7C129058E023FBFB378E06C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_821D94A2C7C129058E023FBFB378E06C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_6CF8AA0B74337846C1293FBFB3785E7B" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_6CF8AA0B74337846C1293FBFB3785E7B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardsotherthanOptionsImpactofInternalReorganizations" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardsotherthanOptionsImpactofInternalReorganizations_81AD640BA9450202A1D03FBFB378BFD9" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardsotherthanOptionsImpactofInternalReorganizations_81AD640BA9450202A1D03FBFB378BFD9" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedNumber" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedNumber_5CB2E65F932166177EDF3FBFB379F947" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedNumber_5CB2E65F932166177EDF3FBFB379F947" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5053C35C5104AE6FADE13FBFB379A1DE" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5053C35C5104AE6FADE13FBFB379A1DE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_BD6B849867686547B01B3FBFB37976D2" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_BD6B849867686547B01B3FBFB37976D2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_9D54628E2A77BC75577A3FBFB379DF21" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_9D54628E2A77BC75577A3FBFB379DF21" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_12225516906F6B39A6E03FBFB379324A" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_12225516906F6B39A6E03FBFB379324A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsImpactofInternalReorganizationsWeightedAverageGrantDateFairValue" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsImpactofInternalReorganizationsWeightedAverageGrantDateFairValue_D677F974E273C45D9BE23FBFB37A724B" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsImpactofInternalReorganizationsWeightedAverageGrantDateFairValue_D677F974E273C45D9BE23FBFB37A724B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedWeightedAverageExercisePrice" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedWeightedAverageExercisePrice_9CD7D24E4535311830D73FBFB37A3AC1" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedWeightedAverageExercisePrice_9CD7D24E4535311830D73FBFB37A3AC1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_35E12F6913744207A84C3FBFB37AD559" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_35E12F6913744207A84C3FBFB37AD559" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_60F85BAF7A3D658D55F73FBFB37ADD43" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_60F85BAF7A3D658D55F73FBFB37ADD43" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_EA31C91797A8625FA4B33FBFB37A7E7D" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_83C9105034A4F459FFA63FBFB377992C" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_EA31C91797A8625FA4B33FBFB37A7E7D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensationStockCompensationDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_34B833C2D802DB0C860D39D07BB8EFB6" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_34B833C2D802DB0C860D39D07BB8EFB6" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_776CDA63BE51BE78E9F539D07BBA622A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_34B833C2D802DB0C860D39D07BB8EFB6" xlink:to="loc_us-gaap_AwardTypeAxis_776CDA63BE51BE78E9F539D07BBA622A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_776CDA63BE51BE78E9F539D07BBA622A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_776CDA63BE51BE78E9F539D07BBA622A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OIPMember" xlink:label="loc_dd_OIPMember_F351C77A7DA52CCBCEBE39D07BBBC376" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0" xlink:to="loc_dd_OIPMember_F351C77A7DA52CCBCEBE39D07BBBC376" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_7F37053B578B7D55CADE39D07BBB8402" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_E56FCBB3B1AC8A38903D39D07BBAADA0" xlink:to="loc_us-gaap_EmployeeStockOptionMember_7F37053B578B7D55CADE39D07BBB8402" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConversionRatio" xlink:label="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConversionRatio_C1DE9795994BD61A46F039D07BBC0B2E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConversionRatio_C1DE9795994BD61A46F039D07BBC0B2E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableIncludingConvertedButNotYetEarned" xlink:label="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableIncludingConvertedButNotYetEarned_1580AC0E0CBD4E44F47F39FD2BD80E3C" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableIncludingConvertedButNotYetEarned_1580AC0E0CBD4E44F47F39FD2BD80E3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_35E324C5A44B03122E5939D07BBCA57C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_35E324C5A44B03122E5939D07BBCA57C" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConvertedButNotYetEarned" xlink:label="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConvertedButNotYetEarned_A784E5C20D40C031652039D07BBC37DB" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_dd_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConvertedButNotYetEarned_A784E5C20D40C031652039D07BBC37DB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost_3F0DF883A167FD17901339D07BBCE2D8" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost_3F0DF883A167FD17901339D07BBCE2D8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_44F5F1989EDC97999E3F39D07BBD1A90" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_44F5F1989EDC97999E3F39D07BBD1A90" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_D8CCBD11C84C8B10CC6D39D07BBD69EA" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_D8CCBD11C84C8B10CC6D39D07BBD69EA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_E473C9E21C389384562F39D07BBD4836" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_E473C9E21C389384562F39D07BBD4836" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DB1B5DB1B7C33065B1B839D07BBDD961" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2EC3F0258CC3B37796B039D07BBB1EDC" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DB1B5DB1B7C33065B1B839D07BBDD961" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensationStockOptionsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardDateAxis" xlink:label="loc_us-gaap_AwardDateAxis_3A516BC70503A34F70773FBFB388A64F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:to="loc_us-gaap_AwardDateAxis_3A516BC70503A34F70773FBFB388A64F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_3A516BC70503A34F70773FBFB388A64F" xlink:to="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_3A516BC70503A34F70773FBFB388A64F" xlink:to="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Grantsbetween2013and2015Member" xlink:label="loc_dd_Grantsbetween2013and2015Member_F40ED1B626827B36E65D3FBFB3891EEF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8" xlink:to="loc_dd_Grantsbetween2013and2015Member_F40ED1B626827B36E65D3FBFB3891EEF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Grantsbetween2016and2018Member" xlink:label="loc_dd_Grantsbetween2016and2018Member_4CD37257B81CF686E7563FBFB38959B5" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_6ABF513F6DF5970F06A73FBFB3887BB8" xlink:to="loc_dd_Grantsbetween2016and2018Member_4CD37257B81CF686E7563FBFB38959B5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_5CE81A608C5F9AD286293FBFB389F16D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:to="loc_us-gaap_AwardTypeAxis_5CE81A608C5F9AD286293FBFB389F16D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5CE81A608C5F9AD286293FBFB389F16D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5CE81A608C5F9AD286293FBFB389F16D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIPMember" xlink:label="loc_dd_EIPMember_605433BA3757E9D8A2B83FBFB38AA627" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:to="loc_dd_EIPMember_605433BA3757E9D8A2B83FBFB38AA627" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OIPMember" xlink:label="loc_dd_OIPMember_7098A20FE8906F9BAB4B3FBFB38ABB5D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:to="loc_dd_OIPMember_7098A20FE8906F9BAB4B3FBFB38ABB5D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockMember" xlink:label="loc_us-gaap_EmployeeStockMember_ED890296F52D331D78A63FBFB38A5755" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:to="loc_us-gaap_EmployeeStockMember_ED890296F52D331D78A63FBFB38A5755" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockOptionMember" xlink:label="loc_us-gaap_StockOptionMember_1446244C2E980FA20CCE3FBFB38A2405" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06CE65BBDA4B945A1AC23FBFB38927CB" xlink:to="loc_us-gaap_StockOptionMember_1446244C2E980FA20CCE3FBFB38A2405" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_9818D475E4C60A8AE64E3FBFB38A1C80" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:to="loc_us-gaap_PlanNameAxis_9818D475E4C60A8AE64E3FBFB38A1C80" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_833932BB584DDEEECA523FBFB38B5D48_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_9818D475E4C60A8AE64E3FBFB38A1C80" xlink:to="loc_us-gaap_PlanNameDomain_833932BB584DDEEECA523FBFB38B5D48_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_833932BB584DDEEECA523FBFB38B5D48" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_9818D475E4C60A8AE64E3FBFB38A1C80" xlink:to="loc_us-gaap_PlanNameDomain_833932BB584DDEEECA523FBFB38B5D48" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DowMember" xlink:label="loc_dd_DowMember_E21A200167C7166174393FBFB38B160F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_833932BB584DDEEECA523FBFB38B5D48" xlink:to="loc_dd_DowMember_E21A200167C7166174393FBFB38B160F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_4BCE0E9796580D572F833FBFB38B507C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:to="loc_srt_StatementScenarioAxis_4BCE0E9796580D572F833FBFB38B507C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3519873D8A17F81C2FC53FBFB38CF92E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_4BCE0E9796580D572F833FBFB38B507C" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3519873D8A17F81C2FC53FBFB38CF92E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_3519873D8A17F81C2FC53FBFB38CF92E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_4BCE0E9796580D572F833FBFB38B507C" xlink:to="loc_srt_ScenarioUnspecifiedDomain_3519873D8A17F81C2FC53FBFB38CF92E" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InternalReorganizationMember" xlink:label="loc_dd_InternalReorganizationMember_B41B572BE643D6206D0C3FBFB38CD4D4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_3519873D8A17F81C2FC53FBFB38CF92E" xlink:to="loc_dd_InternalReorganizationMember_B41B572BE643D6206D0C3FBFB38CD4D4" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_EC2C8EAB1B43879CA6143FBFB38CFEDA" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_CA1A8F543FFB0B4BA0243FBFB388C913" xlink:to="loc_dei_LegalEntityAxis_EC2C8EAB1B43879CA6143FBFB38CFEDA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A6164E1A12E25C0F6DBD3FBFB38CC421_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_EC2C8EAB1B43879CA6143FBFB38CFEDA" xlink:to="loc_dd_DuPontDomain_A6164E1A12E25C0F6DBD3FBFB38CC421_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_A6164E1A12E25C0F6DBD3FBFB38CC421" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_EC2C8EAB1B43879CA6143FBFB38CFEDA" xlink:to="loc_dd_DuPontDomain_A6164E1A12E25C0F6DBD3FBFB38CC421" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_B5789940FF8ABB028AF03FBFB38C4576" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_A6164E1A12E25C0F6DBD3FBFB38CC421" xlink:to="loc_dd_CortevaMember_B5789940FF8ABB028AF03FBFB38C4576" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_BB1B4B1D6B1BB15CCB473FBFB38D18B4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_BB1B4B1D6B1BB15CCB473FBFB38D18B4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_70F117A9AD825E965C163FBFB38D3777" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_70F117A9AD825E965C163FBFB38D3777" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_EF7F69C786B585F6132B3FBFB38DA458" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_EF7F69C786B585F6132B3FBFB38DA458" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_1CA578BB7BF4D10B82573FBFB38EEF33" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_1CA578BB7BF4D10B82573FBFB38EEF33" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_5FE96AEC285F2CE191B73FBFB38EB11D" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_5FE96AEC285F2CE191B73FBFB38EB11D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_BB5C9B3FA079A9736D9C3FBFB38EFE15" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_BB5C9B3FA079A9736D9C3FBFB38EFE15" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_723C8883C586C9AF42453FBFB38E98F2" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_723C8883C586C9AF42453FBFB38E98F2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsImpactofInternalReorganizations" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsImpactofInternalReorganizations_25F8E4102DDAD3AED1263FBFB38E79B9" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsImpactofInternalReorganizations_25F8E4102DDAD3AED1263FBFB38E79B9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_060CAA78F6DB861F038F3FBFB38F0055" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_060CAA78F6DB861F038F3FBFB38F0055" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedNumber" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedNumber_CD797BC20A88942ABAAE3FBFB38F7416" xlink:type="locator"/>
<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedNumber_CD797BC20A88942ABAAE3FBFB38F7416" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2C06BA636A3BE94555B53FBFB38FE6CB" xlink:type="locator"/>
<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2C06BA636A3BE94555B53FBFB38FE6CB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_030C835F5DD94C39B73F3FBFB38F8A23" xlink:type="locator"/>
<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_030C835F5DD94C39B73F3FBFB38F8A23" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_8B8B6A76C5C7351FB6A93FBFB38F627F" xlink:type="locator"/>
<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_8B8B6A76C5C7351FB6A93FBFB38F627F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_95396BB6B87C1455F2593FBFB390120F" xlink:type="locator"/>
<link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_95396BB6B87C1455F2593FBFB390120F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementsbySharebasedPaymentAwardOptionsImpactofInternalReorganizationsWeightedAverageExercisePrice" xlink:label="loc_dd_SharebasedCompensationArrangementsbySharebasedPaymentAwardOptionsImpactofInternalReorganizationsWeightedAverageExercisePrice_6CEC8E2B526C2500E2733FBFB390C396" xlink:type="locator"/>
<link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_dd_SharebasedCompensationArrangementsbySharebasedPaymentAwardOptionsImpactofInternalReorganizationsWeightedAverageExercisePrice_6CEC8E2B526C2500E2733FBFB390C396" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_5A14ABF530BFBF471C5C3FBFB3909967" xlink:type="locator"/>
<link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_5A14ABF530BFBF471C5C3FBFB3909967" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedWeightedAverageExercisePrice" xlink:label="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedWeightedAverageExercisePrice_E65242B2E1158CC70E633FBFB3902AB2" xlink:type="locator"/>
<link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_dd_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsConvertedWeightedAverageExercisePrice_E65242B2E1158CC70E633FBFB3902AB2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_8FF679DBFD6847DA56CE3FBFB39134B3" xlink:type="locator"/>
<link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_8FF679DBFD6847DA56CE3FBFB39134B3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_8D88EB276F73F386F5DC3FBFB3911729" xlink:type="locator"/>
<link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_8D88EB276F73F386F5DC3FBFB3911729" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_48B6C034BA9CC18A02983FBFB391315A" xlink:type="locator"/>
<link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_48B6C034BA9CC18A02983FBFB391315A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_6FB55DF42B8323B44D313FBFB391B334" xlink:type="locator"/>
<link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_6FB55DF42B8323B44D313FBFB391B334" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_8C42B8C6BDA8CDB2C2D93FBFB39193C3" xlink:type="locator"/>
<link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_8C42B8C6BDA8CDB2C2D93FBFB39193C3" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_571A410779B36CF1CB2A3FBFB391154C" xlink:type="locator"/>
<link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_571A410779B36CF1CB2A3FBFB391154C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_0EC408DE1E0C848F9AEB3FBFB392E96D" xlink:type="locator"/>
<link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_0EC408DE1E0C848F9AEB3FBFB392E96D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_C6DEA0BB4828B00DC8B73FBFB392D016" xlink:type="locator"/>
<link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2E7A97BBEFE934BEDABF3FBFB38D634B" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_C6DEA0BB4828B00DC8B73FBFB392D016" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensationTables" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_F165582C33F839D1B82D39D07BC8305C" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1C32877362A8FC78B91539D07BC45219" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_F165582C33F839D1B82D39D07BC8305C" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1C32877362A8FC78B91539D07BC45219" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_155780B2EEA828D57D3339D07BC675FF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1C32877362A8FC78B91539D07BC45219" xlink:to="loc_us-gaap_PlanNameAxis_155780B2EEA828D57D3339D07BC675FF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_155780B2EEA828D57D3339D07BC675FF" xlink:to="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_155780B2EEA828D57D3339D07BC675FF" xlink:to="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIPMember" xlink:label="loc_dd_EIPMember_41F0E666F61C25A7727F39F16B038724" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8" xlink:to="loc_dd_EIPMember_41F0E666F61C25A7727F39F16B038724" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_OIPMember" xlink:label="loc_dd_OIPMember_3FFCDCCE8CAC377BF8DA39F21C4E373F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_6D174F95589B536E0F6739D07BC65AF8" xlink:to="loc_dd_OIPMember_3FFCDCCE8CAC377BF8DA39F21C4E373F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_9FF2CD3BA56E02C1FA1239D07BC8E7CC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_F165582C33F839D1B82D39D07BC8305C" xlink:to="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_9FF2CD3BA56E02C1FA1239D07BC8E7CC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_AE997DD3BF27F144CC0F39D07BC8CBB6" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_F165582C33F839D1B82D39D07BC8305C" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_AE997DD3BF27F144CC0F39D07BC8CBB6" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_34251FB1F3F911ACB64639D07BC9410C" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_F165582C33F839D1B82D39D07BC8305C" xlink:to="loc_us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_34251FB1F3F911ACB64639D07BC9410C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockBasedCompensationWeightedAverageAssumptionsStockOptionsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4BA7365B2CB8EAFB2D9639D07BACE7EA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4BA7365B2CB8EAFB2D9639D07BACE7EA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_CCF00D794EFB305F895C39D07BAED53B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4BA7365B2CB8EAFB2D9639D07BACE7EA" xlink:to="loc_us-gaap_PlanNameAxis_CCF00D794EFB305F895C39D07BAED53B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_41BB914E55875A4750E539D07BAE1036_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_CCF00D794EFB305F895C39D07BAED53B" xlink:to="loc_us-gaap_PlanNameDomain_41BB914E55875A4750E539D07BAE1036_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_41BB914E55875A4750E539D07BAE1036" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_CCF00D794EFB305F895C39D07BAED53B" xlink:to="loc_us-gaap_PlanNameDomain_41BB914E55875A4750E539D07BAE1036" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIPMember" xlink:label="loc_dd_EIPMember_C5E788D2F0D1315C924E3A044C900A50" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_41BB914E55875A4750E539D07BAE1036" xlink:to="loc_dd_EIPMember_C5E788D2F0D1315C924E3A044C900A50" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_4DAA35C63B7B3F63980039D07BB0973E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_4DAA35C63B7B3F63980039D07BB0973E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_002F5552E34B4C05431D39D07BB09477" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_002F5552E34B4C05431D39D07BB09477" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_EE3BBACBD864A3CB2AB739D07BB1CEDE" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_EE3BBACBD864A3CB2AB739D07BB1CEDE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_7122C9AAEA22360908B039D07BB12143" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C53F0BF38FF37872B8F439D07BB0C44E" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_7122C9AAEA22360908B039D07BB12143" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquity" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityCommonStockDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityClassOfTreasuryStockLineItems" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_C024756E7B4C928CD70C34AD5CE67653" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_C024756E7B4C928CD70C34AD5CE67653" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_CA976AAE6E8649AE497434AD5CE93D45" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_C024756E7B4C928CD70C34AD5CE67653" xlink:to="loc_dd_CompanyAxis_CA976AAE6E8649AE497434AD5CE93D45" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_B3CCAEE3589B218B1A4334AD5CE992E4_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_CA976AAE6E8649AE497434AD5CE93D45" xlink:to="loc_dd_CortevaDomain_B3CCAEE3589B218B1A4334AD5CE992E4_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_B3CCAEE3589B218B1A4334AD5CE992E4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_CA976AAE6E8649AE497434AD5CE93D45" xlink:to="loc_dd_CortevaDomain_B3CCAEE3589B218B1A4334AD5CE992E4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_6441AFDCFFA84102DF6534AD5CEA4DB0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_B3CCAEE3589B218B1A4334AD5CE992E4" xlink:to="loc_dd_CortevaMember_6441AFDCFFA84102DF6534AD5CEA4DB0" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_84EC77CFE43466AFBCCD34AD5CE631F2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_C024756E7B4C928CD70C34AD5CE67653" xlink:to="loc_dei_LegalEntityAxis_84EC77CFE43466AFBCCD34AD5CE631F2" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_1616C2ED54863AEA8DEE34AD5CE6A9BB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_84EC77CFE43466AFBCCD34AD5CE631F2" xlink:to="loc_dd_DuPontDomain_1616C2ED54863AEA8DEE34AD5CE6A9BB_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_1616C2ED54863AEA8DEE34AD5CE6A9BB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_84EC77CFE43466AFBCCD34AD5CE631F2" xlink:to="loc_dd_DuPontDomain_1616C2ED54863AEA8DEE34AD5CE6A9BB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_4BABEE71B8221876D61734AD5CE7145A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_1616C2ED54863AEA8DEE34AD5CE6A9BB" xlink:to="loc_dd_CortevaMember_4BABEE71B8221876D61734AD5CE7145A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockByUniqueDescriptionAxis" xlink:label="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_4AA70EA7A8E03DE2F69434AD5CE817CF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_C024756E7B4C928CD70C34AD5CE67653" xlink:to="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_4AA70EA7A8E03DE2F69434AD5CE817CF" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockNameDomain" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_4AA70EA7A8E03DE2F69434AD5CE817CF" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockNameDomain" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_4AA70EA7A8E03DE2F69434AD5CE817CF" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharesofCortevaStockMember" xlink:label="loc_dd_SharesofCortevaStockMember_F641C71C6D4D7453463C34AD5CE80FBB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194" xlink:to="loc_dd_SharesofCortevaStockMember_F641C71C6D4D7453463C34AD5CE80FBB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SharesofDowDuPontCommonStockHeldMember" xlink:label="loc_dd_SharesofDowDuPontCommonStockHeldMember_FE0F1293EAD2692F127634AD5CE964F8" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockNameDomain_E19CBEE3B7E930B6400034AD5CE80194" xlink:to="loc_dd_SharesofDowDuPontCommonStockHeldMember_FE0F1293EAD2692F127634AD5CE964F8" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ExchangeRatio" xlink:label="loc_dd_ExchangeRatio_CA517B91C6128EB6367434AD5CED013E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_dd_ExchangeRatio_CA517B91C6128EB6367434AD5CED013E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_5D92B6DFF9E4276D8A4534AD5CEEBDC4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_5D92B6DFF9E4276D8A4534AD5CEEBDC4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_1D2284D65C68B163853F34AD5CEEA2A9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_1D2284D65C68B163853F34AD5CEEA2A9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_EF67B9E885DDFF665D1C34AD5CED74A0" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_EF67B9E885DDFF665D1C34AD5CED74A0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_C24B28F8D62F83743F2634AD5CEE04C5" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_C24B28F8D62F83743F2634AD5CEE04C5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_150F3D47B86D0C1F5FEC34AD5CEE953C" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_150F3D47B86D0C1F5FEC34AD5CEE953C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_ED90FB178E54098042BB34AD5CED1273" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_ED90FB178E54098042BB34AD5CED1273" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_7AD417D8751FC9DB593134AD5CEF792E" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2A0EF77257370E9E864B34AD5CECB08F" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_7AD417D8751FC9DB593134AD5CEF792E" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityNoncontrollingInterestDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestLineItems" xlink:label="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestTable" xlink:label="loc_us-gaap_MinorityInterestTable_F17BEE005CFC256561C434AD58FE9DC1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:to="loc_us-gaap_MinorityInterestTable_F17BEE005CFC256561C434AD58FE9DC1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CompanyAxis" xlink:label="loc_dd_CompanyAxis_558916EDB9B8CBE0B2FA34BE521BB46A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_F17BEE005CFC256561C434AD58FE9DC1" xlink:to="loc_dd_CompanyAxis_558916EDB9B8CBE0B2FA34BE521BB46A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_CompanyAxis_558916EDB9B8CBE0B2FA34BE521BB46A" xlink:to="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaDomain" xlink:label="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_CompanyAxis_558916EDB9B8CBE0B2FA34BE521BB46A" xlink:to="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_760A6FB01DEF5C4A5435352F9FE7496D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_760A6FB01DEF5C4A5435352F9FE7496D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_CortevaMember" xlink:label="loc_dd_CortevaMember_11C96B28D7A0759459F034BE52DCA36E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_CortevaDomain_BC240E2C9AB5C2A19B3234BE535DEF1B" xlink:to="loc_dd_CortevaMember_11C96B28D7A0759459F034BE52DCA36E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_987BCECEED006EDD206034AD58FFC6E1" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_F17BEE005CFC256561C434AD58FE9DC1" xlink:to="loc_us-gaap_StatementClassOfStockAxis_987BCECEED006EDD206034AD58FFC6E1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_987BCECEED006EDD206034AD58FFC6E1" xlink:to="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_987BCECEED006EDD206034AD58FFC6E1" xlink:to="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A4.50SeriesPreferredStockMember" xlink:label="loc_dd_A4.50SeriesPreferredStockMember_50D1F369F61CABFDB92734AD58FF2AAE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A" xlink:to="loc_dd_A4.50SeriesPreferredStockMember_50D1F369F61CABFDB92734AD58FF2AAE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_A3.50SeriesPreferredStockMember" xlink:label="loc_dd_A3.50SeriesPreferredStockMember_87319A31AB9F6DF4415334AD5900869D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_CC64602400DFB8CAEC8F34AD58FF141A" xlink:to="loc_dd_A3.50SeriesPreferredStockMember_87319A31AB9F6DF4415334AD5900869D" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_49EE9D8E18DDABE98C2334AD5900CF21" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_F17BEE005CFC256561C434AD58FE9DC1" xlink:to="loc_dei_LegalEntityAxis_49EE9D8E18DDABE98C2334AD5900CF21" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_0EB12C7BE5650B5D293A34AD59001742_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_49EE9D8E18DDABE98C2334AD5900CF21" xlink:to="loc_dd_DuPontDomain_0EB12C7BE5650B5D293A34AD59001742_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DuPontDomain" xlink:label="loc_dd_DuPontDomain_0EB12C7BE5650B5D293A34AD59001742" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_49EE9D8E18DDABE98C2334AD5900CF21" xlink:to="loc_dd_DuPontDomain_0EB12C7BE5650B5D293A34AD59001742" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_EIDMember" xlink:label="loc_dd_EIDMember_13610FC38BAAA31D7B5D34AD59002CB4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DuPontDomain_0EB12C7BE5650B5D293A34AD59001742" xlink:to="loc_dd_EIDMember_13610FC38BAAA31D7B5D34AD59002CB4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Ownershipinterestinanentity" xlink:label="loc_dd_Ownershipinterestinanentity_C722583C7CDAD9C62C6734AD5902DF3C" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:to="loc_dd_Ownershipinterestinanentity_C722583C7CDAD9C62C6734AD5902DF3C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_62DF33E93DC274AF868B34AD59023470" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_62DF33E93DC274AF868B34AD59023470" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_A51B5C4FEDD3B67F9D0C34AD59027FA9" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:to="loc_us-gaap_PreferredStockSharesIssued_A51B5C4FEDD3B67F9D0C34AD59027FA9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockRedemptionAmount" xlink:label="loc_us-gaap_PreferredStockRedemptionAmount_3391A99D38BBF6E0481534AD5902010A" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_FABF8F1423892D4528B634AD590218F0" xlink:to="loc_us-gaap_PreferredStockRedemptionAmount_3391A99D38BBF6E0481534AD5902010A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityOtherComprehensiveIncomeLossDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_DEF547475BDA45BA910134AD5D32B1CA" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_DEF547475BDA45BA910134AD5D32B1CA" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_DEF547475BDA45BA910134AD5D32B1CA" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_DEF547475BDA45BA910134AD5D32B1CA" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_0A99320959B3D2ACE3BD34AD5D339558" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_0A99320959B3D2ACE3BD34AD5D339558" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D7102342A4F8FD82617B34AD5D33C95F" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_768D1815FCB2A6A781B234AD5D323067" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_D7102342A4F8FD82617B34AD5D33C95F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_98A48C831BC62E5B9B3534AD5D3075C4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:to="loc_srt_RestatementAxis_98A48C831BC62E5B9B3534AD5D3075C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_272F60AF88C939B6950D34AD5D31A9D5_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_98A48C831BC62E5B9B3534AD5D3075C4" xlink:to="loc_srt_RestatementDomain_272F60AF88C939B6950D34AD5D31A9D5_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_272F60AF88C939B6950D34AD5D31A9D5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_98A48C831BC62E5B9B3534AD5D3075C4" xlink:to="loc_srt_RestatementDomain_272F60AF88C939B6950D34AD5D31A9D5" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_SuccessorPeriodMember" xlink:label="loc_dd_SuccessorPeriodMember_06741004C22BEC5C2C9934AD5D3174E1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_272F60AF88C939B6950D34AD5D31A9D5" xlink:to="loc_dd_SuccessorPeriodMember_06741004C22BEC5C2C9934AD5D3174E1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_8B75AE4EAA46BB895F8C34AD5D315336" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:to="loc_srt_StatementScenarioAxis_8B75AE4EAA46BB895F8C34AD5D315336" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_1DD3BD2A61F2557DE24B34AD5D32BF58_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_8B75AE4EAA46BB895F8C34AD5D315336" xlink:to="loc_srt_ScenarioUnspecifiedDomain_1DD3BD2A61F2557DE24B34AD5D32BF58_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_1DD3BD2A61F2557DE24B34AD5D32BF58" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_8B75AE4EAA46BB895F8C34AD5D315336" xlink:to="loc_srt_ScenarioUnspecifiedDomain_1DD3BD2A61F2557DE24B34AD5D32BF58" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InternalReorganizationMember" xlink:label="loc_dd_InternalReorganizationMember_013AE754485ED6C0029634AD5D3263ED" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_1DD3BD2A61F2557DE24B34AD5D32BF58" xlink:to="loc_dd_InternalReorganizationMember_013AE754485ED6C0029634AD5D3263ED" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_43674AC52EE67A7AC5C034AD5D33F8C4" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7D08727C4AD032C1389434AD5D30D866" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_43674AC52EE67A7AC5C034AD5D33F8C4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_43674AC52EE67A7AC5C034AD5D33F8C4" xlink:to="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_43674AC52EE67A7AC5C034AD5D33F8C4" xlink:to="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_510FBA897459AF6B707034AD5D34C030" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_510FBA897459AF6B707034AD5D34C030" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_0C243CEC9A3927A6790C34AD5D34C0AB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_0C243CEC9A3927A6790C34AD5D34C0AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7DB42F33F10F6A19A99E34AD5D347C2A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7DB42F33F10F6A19A99E34AD5D347C2A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_A658A781F26E8B4F8AA934AD5D3475F1" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_291C3B72D57B40DD31DE34AD5D333A6E" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_A658A781F26E8B4F8AA934AD5D3475F1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_89BAA1033272B5C4BD7234AD5D35B5B5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_89BAA1033272B5C4BD7234AD5D35B5B5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_469929A0C745E5CF9F0834AD5D36D7AB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_469929A0C745E5CF9F0834AD5D36D7AB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_A0AF80FA822FDBB7A4F634AD5D368C4A" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_A0AF80FA822FDBB7A4F634AD5D368C4A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_D7D357D8E1BC4C102B5534AD5D36B54C" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_D7D357D8E1BC4C102B5534AD5D36B54C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeOtherNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeOtherNetOfTax_DEC9065738D1B925CDEB34AD5D36A50F" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_A4156BC683CF6186D34834AD5D35DE1A" xlink:to="loc_us-gaap_OtherComprehensiveIncomeOtherNetOfTax_DEC9065738D1B925CDEB34AD5D36A50F" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityReclassificationsOutOfAociDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_F4644638EB1CEA693C03342224380FC4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_F4644638EB1CEA693C03342224380FC4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_D89AA3508923AB381C5834222438D680" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_F4644638EB1CEA693C03342224380FC4" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_D89AA3508923AB381C5834222438D680" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_D89AA3508923AB381C5834222438D680" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_D89AA3508923AB381C5834222438D680" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D586C31EDC3E29D21781342224385DF5" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_D586C31EDC3E29D21781342224385DF5" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_75AB36A4CAAB3AB035BA342224384778" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_0937539C54EE42EA44C03422243875CB" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_75AB36A4CAAB3AB035BA342224384778" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_47D97CB89FB262148FDB34222438A195" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_F4644638EB1CEA693C03342224380FC4" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_47D97CB89FB262148FDB34222438A195" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_47D97CB89FB262148FDB34222438A195" xlink:to="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_47D97CB89FB262148FDB34222438A195" xlink:to="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_98E1EEC157A7C7061D7E34222438137B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_98E1EEC157A7C7061D7E34222438137B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_A6B9A5BC08E73093B223342224382252" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_A6B9A5BC08E73093B223342224382252" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_B002D4EE97BFCFFB9B5D342224388388" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_B002D4EE97BFCFFB9B5D342224388388" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccumulatedDefinedBenefitPlansAdjustmentCurtailmentGainLossAttributabletoParentMember" xlink:label="loc_dd_AccumulatedDefinedBenefitPlansAdjustmentCurtailmentGainLossAttributabletoParentMember_5ECDF3CE399E6FDF6F65342224382947" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_dd_AccumulatedDefinedBenefitPlansAdjustmentCurtailmentGainLossAttributabletoParentMember_5ECDF3CE399E6FDF6F65342224382947" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccumulatedDefinedBenefitPlansAdjustmentSettlementGainLossMember" xlink:label="loc_dd_AccumulatedDefinedBenefitPlansAdjustmentSettlementGainLossMember_A28992067A1A05B04BA4342224386798" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_dd_AccumulatedDefinedBenefitPlansAdjustmentSettlementGainLossMember_A28992067A1A05B04BA4342224386798" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_14C1AB86E14A17628750342224387ABD" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_14C1AB86E14A17628750342224387ABD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnInvestmentsMember1" xlink:label="loc_us-gaap_GainLossOnInvestmentsMember1_55DFC23E1F8E474E2C7B34F5DFAA8229" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_GainLossOnInvestmentsMember1_55DFC23E1F8E474E2C7B34F5DFAA8229" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1802AC452D6A86CE9C8A34222438489C" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_AD725FED3B22E26036DB34222438851A" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1802AC452D6A86CE9C8A34222438489C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_412AD50C3895CABC19D1342224387699" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_412AD50C3895CABC19D1342224387699" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_FAA4E2555D598768541E34222438BD78" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_FAA4E2555D598768541E34222438BD78" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_45565EB3045E9A0E453234222438680B" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_45565EB3045E9A0E453234222438680B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_ECFD0489673D6F408A7134222438D70E" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_ECFD0489673D6F408A7134222438D70E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_5D1C7D253C6774B8153034222438669F" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_5D1C7D253C6774B8153034222438669F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_C3BFC86256C9508A5E9334222438949C" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_FB3FF9452E3CA6D76D38342224388AE9" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_C3BFC86256C9508A5E9334222438949C" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityTables" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/StockholdersEquityTaxBenefitExpenseOnNetActivityDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_0A66D7C4D6931209883F34AD5B6B68B0" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_0476366658488D2FAA1434AD5B692492" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_0A66D7C4D6931209883F34AD5B6B68B0" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_0476366658488D2FAA1434AD5B692492" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_F978DB458DD07BE4F2B534AD5B6A381A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_0476366658488D2FAA1434AD5B692492" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_F978DB458DD07BE4F2B534AD5B6A381A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_5A9131490BD23DA2B93734AD5B6A5620_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F978DB458DD07BE4F2B534AD5B6A381A" xlink:to="loc_us-gaap_EquityComponentDomain_5A9131490BD23DA2B93734AD5B6A5620_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_5A9131490BD23DA2B93734AD5B6A5620" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F978DB458DD07BE4F2B534AD5B6A381A" xlink:to="loc_us-gaap_EquityComponentDomain_5A9131490BD23DA2B93734AD5B6A5620" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_78A0F18EC25E08EDC00134AD5B6BEA44" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5A9131490BD23DA2B93734AD5B6A5620" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_78A0F18EC25E08EDC00134AD5B6BEA44" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_51AF6A55CC2C4439762534AD5B69A4A4" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_0476366658488D2FAA1434AD5B692492" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_51AF6A55CC2C4439762534AD5B69A4A4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_51AF6A55CC2C4439762534AD5B69A4A4" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain" xlink:label="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansAxis_51AF6A55CC2C4439762534AD5B69A4A4" xlink:to="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_99C3541E47EE7E59745034AD5B6A7520" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_99C3541E47EE7E59745034AD5B6A7520" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0ECD6D5EF85D6CAAFF4534AD5B6A2A6A" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_DefinedBenefitPlansandOtherPostretirementBenefitPlansDomain_BDC2317A95BEC41B4EDF34AD5B69A4EE" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0ECD6D5EF85D6CAAFF4534AD5B6A2A6A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_6690D5ABB88373E8F76134AD5B6BA849" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_0A66D7C4D6931209883F34AD5B6B68B0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_6690D5ABB88373E8F76134AD5B6BA849" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SubsequentEventsDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_9358685383E23E3F598120C995BC2802" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_0DC6300E6DDBAC98E26220C995B81A4F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_9358685383E23E3F598120C995BC2802" xlink:to="loc_us-gaap_SubsequentEventTable_0DC6300E6DDBAC98E26220C995B81A4F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_D8AA02B2CF6DF4043CB120C995BAC22A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0DC6300E6DDBAC98E26220C995B81A4F" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_D8AA02B2CF6DF4043CB120C995BAC22A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_205C4C9D4FF5B70C967220C995BAFC2B_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_D8AA02B2CF6DF4043CB120C995BAC22A" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_205C4C9D4FF5B70C967220C995BAFC2B_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_205C4C9D4FF5B70C967220C995BAFC2B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_D8AA02B2CF6DF4043CB120C995BAC22A" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_205C4C9D4FF5B70C967220C995BAFC2B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMember" xlink:label="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMember_47709B48AF38E597A7C520C995BB941B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_205C4C9D4FF5B70C967220C995BAFC2B" xlink:to="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMember_47709B48AF38E597A7C520C995BB941B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_F3DD8591C7F4D6646E5920C995BCEBC3" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_9358685383E23E3F598120C995BC2802" xlink:to="loc_us-gaap_ShortTermBorrowings_F3DD8591C7F4D6646E5920C995BCEBC3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Percentageofoutstandingamountsborrowedutilizedascollateral" xlink:label="loc_dd_Percentageofoutstandingamountsborrowedutilizedascollateral_E8EF338A79E768DDE57E20C995BE2CA0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_9358685383E23E3F598120C995BC2802" xlink:to="loc_dd_Percentageofoutstandingamountsborrowedutilizedascollateral_E8EF338A79E768DDE57E20C995BE2CA0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_InterestrateinadditiontoLIBOR" xlink:label="loc_dd_InterestrateinadditiontoLIBOR_6585318D0D0176D001F820C995BE72FF" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_9358685383E23E3F598120C995BC2802" xlink:to="loc_dd_InterestrateinadditiontoLIBOR_6585318D0D0176D001F820C995BE72FF" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SubsequentEventsNotes" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_93A6C5E65B890EEFDC3D39D0808ECCBC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_StatementTable_93A6C5E65B890EEFDC3D39D0808ECCBC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_30398BE004DE12F6DD4539D0808EC19B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_93A6C5E65B890EEFDC3D39D0808ECCBC" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_30398BE004DE12F6DD4539D0808EC19B" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_30398BE004DE12F6DD4539D0808EC19B" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_30398BE004DE12F6DD4539D0808EC19B" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_D84CC49B2B3C083932CC39D0808FB117" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_D84CC49B2B3C083932CC39D0808FB117" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_294A4EC161714EE087DC39D080906519" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_90313CB80200A16CBA2739D0808FC291" xlink:to="loc_us-gaap_OtherAssetsMember_294A4EC161714EE087DC39D080906519" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_AA7AB500C8A4B8AA32BA39D08091731D" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_93A6C5E65B890EEFDC3D39D0808ECCBC" xlink:to="loc_srt_RangeAxis_AA7AB500C8A4B8AA32BA39D08091731D" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_AA7AB500C8A4B8AA32BA39D08091731D" xlink:to="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_AA7AB500C8A4B8AA32BA39D08091731D" xlink:to="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_A076D276B5D78E41904C39D08091C250" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A" xlink:to="loc_srt_MinimumMember_A076D276B5D78E41904C39D08091C250" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_CD97C7E0DC0C1F69BDB439D08092D75B" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_E2AD496110B65DDD5AB339D08091163A" xlink:to="loc_srt_MaximumMember_CD97C7E0DC0C1F69BDB439D08092D75B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_BusinessCombinationIntegrationAndSeparationRelatedCosts" xlink:label="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_8B55A46F08451038440339D08092A9E8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_dd_BusinessCombinationIntegrationAndSeparationRelatedCosts_8B55A46F08451038440339D08092A9E8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidRoyalties" xlink:label="loc_us-gaap_PrepaidRoyalties_2AEDDB102D05D3114B8E39D080928718" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_PrepaidRoyalties_2AEDDB102D05D3114B8E39D080928718" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCash" xlink:label="loc_us-gaap_RestrictedCash_2BF225DE4C7D93DE434C39D0809227FA" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_RestrictedCash_2BF225DE4C7D93DE434C39D0809227FA" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PercentageOfFIFOInventory" xlink:label="loc_us-gaap_PercentageOfFIFOInventory_4207D16073700848353039D08093288F" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_PercentageOfFIFOInventory_4207D16073700848353039D08093288F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PercentageOfWeightedAverageCostInventory" xlink:label="loc_us-gaap_PercentageOfWeightedAverageCostInventory_95E74FCE81EC9D13B17639D0809817F4" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_PercentageOfWeightedAverageCostInventory_95E74FCE81EC9D13B17639D0809817F4" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_2564208D14D5A3E52AB539D080980178" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4C00F2763732A23DF93239D080927DE9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_2564208D14D5A3E52AB539D080980178" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformation" xlink:type="extended"/>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformationForeignCurrencyExchangeGainLossDetails" xlink:type="extended">
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyExchangeGainLossLineItems" xlink:label="loc_dd_ForeignCurrencyExchangeGainLossLineItems_586B6FB8A28E8F70BB7F3655BAB66785" xlink:type="locator"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyExchangeGainLossTable" xlink:label="loc_dd_ForeignCurrencyExchangeGainLossTable_A5C59D74B08B4F013F5A3655BAB494FE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossLineItems_586B6FB8A28E8F70BB7F3655BAB66785" xlink:to="loc_dd_ForeignCurrencyExchangeGainLossTable_A5C59D74B08B4F013F5A3655BAB494FE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_B0B4B316D72DE91010A63655BAB4F706" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossTable_A5C59D74B08B4F013F5A3655BAB494FE" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_B0B4B316D72DE91010A63655BAB4F706" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_B0B4B316D72DE91010A63655BAB4F706" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_B0B4B316D72DE91010A63655BAB4F706" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_E2CD84E2C782DD32F3763655BAB544C8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_E2CD84E2C782DD32F3763655BAB544C8" xlink:type="arc"/>
<link:loc xlink:href="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd#currency_ARS" xlink:label="loc_currency_ARS_6EE100B66E74B21E76103655BAB5B348" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825" xlink:to="loc_currency_ARS_6EE100B66E74B21E76103655BAB5B348" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_AA993429FFE96848F7133655BAB597C3" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_CDC2E2599D3D3A7CE9B43655BAB45825" xlink:to="loc_dd_ArgentinepesodevaluationMember_AA993429FFE96848F7133655BAB597C3" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_37DEC48182B94017D8433655BAB5C3EB" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossTable_A5C59D74B08B4F013F5A3655BAB494FE" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_37DEC48182B94017D8433655BAB5C3EB" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_37DEC48182B94017D8433655BAB5C3EB" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_37DEC48182B94017D8433655BAB5C3EB" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SubsidiariesMember" xlink:label="loc_srt_SubsidiariesMember_D231581FE7316D188D6A3655BAB6C087" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E" xlink:to="loc_srt_SubsidiariesMember_D231581FE7316D188D6A3655BAB6C087" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_AD69AD7716C346F103E63655BAB671DC" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_B2CA3A5F28E0F2AB845D3655BAB6F26E" xlink:to="loc_dd_HedgingProgramMember_AD69AD7716C346F103E63655BAB671DC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_065A02FD5BEFA031CD843655BAB751CF" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossLineItems_586B6FB8A28E8F70BB7F3655BAB66785" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_065A02FD5BEFA031CD843655BAB751CF" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionGainLossTax" xlink:label="loc_dd_ForeignCurrencyTransactionGainLossTax_4B1489DC0C555236D1F73655BAB76C84" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossLineItems_586B6FB8A28E8F70BB7F3655BAB66785" xlink:to="loc_dd_ForeignCurrencyTransactionGainLossTax_4B1489DC0C555236D1F73655BAB76C84" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionGainLossAfterTax" xlink:label="loc_dd_ForeignCurrencyTransactionGainLossAfterTax_24A69B470C62E6A810643655BAB73974" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyExchangeGainLossLineItems_586B6FB8A28E8F70BB7F3655BAB66785" xlink:to="loc_dd_ForeignCurrencyTransactionGainLossAfterTax_24A69B470C62E6A810643655BAB73974" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformationOtherIncomeExpenseNetDetails" xlink:type="extended">
<link:loc xlink:href="dd-20191231.xsd#dd_ScheduleofSundryIncomeExpenseNetLineItems" xlink:label="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:type="locator"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ScheduleofSundryIncomeExpenseNetTable" xlink:label="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeAxis" xlink:label="loc_dd_ForeignCurrencyTransactionTypeAxis_AC0BE268F702FC4750503655BAC0082B" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:to="loc_dd_ForeignCurrencyTransactionTypeAxis_AC0BE268F702FC4750503655BAC0082B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_E177289499A97895F8843655BAC1606A_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_AC0BE268F702FC4750503655BAC0082B" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_E177289499A97895F8843655BAC1606A_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ForeignCurrencyTransactionTypeDomain" xlink:label="loc_dd_ForeignCurrencyTransactionTypeDomain_E177289499A97895F8843655BAC1606A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_ForeignCurrencyTransactionTypeAxis_AC0BE268F702FC4750503655BAC0082B" xlink:to="loc_dd_ForeignCurrencyTransactionTypeDomain_E177289499A97895F8843655BAC1606A" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramMember" xlink:label="loc_dd_HedgingProgramMember_DC0E7E9CB3F09D9A19BA3655BAC132AE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ForeignCurrencyTransactionTypeDomain_E177289499A97895F8843655BAC1606A" xlink:to="loc_dd_HedgingProgramMember_DC0E7E9CB3F09D9A19BA3655BAC132AE" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeAxis" xlink:label="loc_dd_HedgingProgramGainLossTypeAxis_B1033EC03708EA8AE9E43655BAC19E41" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:to="loc_dd_HedgingProgramGainLossTypeAxis_B1033EC03708EA8AE9E43655BAC19E41" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_B1033EC03708EA8AE9E43655BAC19E41" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D_default" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_HedgingProgramGainLossTypeDomain" xlink:label="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dd_HedgingProgramGainLossTypeAxis_B1033EC03708EA8AE9E43655BAC19E41" xlink:to="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_ArgentinepesodevaluationMember" xlink:label="loc_dd_ArgentinepesodevaluationMember_4013C91C544194A1955C3655BAC13EF0" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D" xlink:to="loc_dd_ArgentinepesodevaluationMember_4013C91C544194A1955C3655BAC13EF0" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_TaxReformForeignCurrencyExchangeImpactMember" xlink:label="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_B618E8830A3654926CF53655BAC2EFA2" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_HedgingProgramGainLossTypeDomain_6FD2F2956E1237FB1B173655BAC15D8D" xlink:to="loc_dd_TaxReformForeignCurrencyExchangeImpactMember_B618E8830A3654926CF53655BAC2EFA2" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="loc_us-gaap_UnusualOrInfrequentItemAxis_1E8E03F82C9D2FE736933655BABF5186" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:to="loc_us-gaap_UnusualOrInfrequentItemAxis_1E8E03F82C9D2FE736933655BABF5186" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_5F9F0D915D7EDD9A4F123655BABFE5B4_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_1E8E03F82C9D2FE736933655BABF5186" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_5F9F0D915D7EDD9A4F123655BABFE5B4_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="loc_us-gaap_UnusualOrInfrequentItemDomain_5F9F0D915D7EDD9A4F123655BABFE5B4" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnusualOrInfrequentItemAxis_1E8E03F82C9D2FE736933655BABF5186" xlink:to="loc_us-gaap_UnusualOrInfrequentItemDomain_5F9F0D915D7EDD9A4F123655BABFE5B4" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DeconsolidationofasubsidiaryMember" xlink:label="loc_dd_DeconsolidationofasubsidiaryMember_EE07DA0D48E09A008BC03655BABF9BDC" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemDomain_5F9F0D915D7EDD9A4F123655BABFE5B4" xlink:to="loc_dd_DeconsolidationofasubsidiaryMember_EE07DA0D48E09A008BC03655BABF9BDC" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_8FD1A2D90B48F54B7DB63655BAC0F8BD" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:to="loc_srt_StatementScenarioAxis_8FD1A2D90B48F54B7DB63655BAC0F8BD" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_4F2BAA42D4350468D71D3655BAC04727_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_8FD1A2D90B48F54B7DB63655BAC0F8BD" xlink:to="loc_srt_ScenarioUnspecifiedDomain_4F2BAA42D4350468D71D3655BAC04727_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_4F2BAA42D4350468D71D3655BAC04727" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_8FD1A2D90B48F54B7DB63655BAC0F8BD" xlink:to="loc_srt_ScenarioUnspecifiedDomain_4F2BAA42D4350468D71D3655BAC04727" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_F703C94CCDEE3D069C783655BAC0F9C1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_4F2BAA42D4350468D71D3655BAC04727" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_F703C94CCDEE3D069C783655BAC0F9C1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_D848CC41769BCCC4A3F13655BAC277EB" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetTable_E74752B598C902B576713655BABEDAF2" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_D848CC41769BCCC4A3F13655BAC277EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_CD3E105362FF3B3A8CA23655BAC2BE9D_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_D848CC41769BCCC4A3F13655BAC277EB" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_CD3E105362FF3B3A8CA23655BAC2BE9D_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_CD3E105362FF3B3A8CA23655BAC2BE9D" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_D848CC41769BCCC4A3F13655BAC277EB" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_CD3E105362FF3B3A8CA23655BAC2BE9D" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DASDivestedAgBusinessMemberMember" xlink:label="loc_dd_DASDivestedAgBusinessMemberMember_5BE316EA3C0D3F4B95FB366C634E8E16" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_CD3E105362FF3B3A8CA23655BAC2BE9D" xlink:to="loc_dd_DASDivestedAgBusinessMemberMember_5BE316EA3C0D3F4B95FB366C634E8E16" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RoyaltyIncomeNonoperating" xlink:label="loc_us-gaap_RoyaltyIncomeNonoperating_EC6863531F5949DB1DF63655BAC343A8" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_RoyaltyIncomeNonoperating_EC6863531F5949DB1DF63655BAC343A8" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaap_InterestIncomeOperating_3594FAE58318FDA647A73655BAC41C46" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_InterestIncomeOperating_3594FAE58318FDA647A73655BAC41C46" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_4CEC4114162D246C56443655BAC4792F" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_4CEC4114162D246C56443655BAC4792F" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Netgainonsalesofbusinessesandotherassets" xlink:label="loc_dd_Netgainonsalesofbusinessesandotherassets_99596F405DC30F257A8A3655BAC467A9" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_dd_Netgainonsalesofbusinessesandotherassets_99596F405DC30F257A8A3655BAC467A9" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_382968A6D7178E4855A63655BAC41035" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_382968A6D7178E4855A63655BAC41035" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DefinedBenefitPlanOtherNetPeriodicBenefitCostCredit" xlink:label="loc_dd_DefinedBenefitPlanOtherNetPeriodicBenefitCostCredit_EBD048006A9A7BADC2213655BAC47396" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_dd_DefinedBenefitPlanOtherNetPeriodicBenefitCostCredit_EBD048006A9A7BADC2213655BAC47396" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_Miscellaneousincomeandexpensesnet" xlink:label="loc_dd_Miscellaneousincomeandexpensesnet_8022CCFE731FEC7A73333655BAC4956C" xlink:type="locator"/>
<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_dd_Miscellaneousincomeandexpensesnet_8022CCFE731FEC7A73333655BAC4956C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_11DFD721C5B87E0EB1E33655BAC53C44" xlink:type="locator"/>
<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_11DFD721C5B87E0EB1E33655BAC53C44" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_6898FB37B1F94AC484B23655BAC55A5C" xlink:type="locator"/>
<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_6898FB37B1F94AC484B23655BAC55A5C" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_0103D497A5E97F1C33A33655BAC58181" xlink:type="locator"/>
<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dd_ScheduleofSundryIncomeExpenseNetLineItems_731308CA16EC4ED43D1F3655BAC3B2AC" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_0103D497A5E97F1C33A33655BAC58181" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformationReconciliationOfCashCashEquivalentsAndRestrictedCashDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:label="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_1ED4C21D04D89EC97D423655BAAB68D1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_1ED4C21D04D89EC97D423655BAAB68D1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_0C488DF0CCD7CB35C5753655BAAB5590" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_1ED4C21D04D89EC97D423655BAAB68D1" xlink:to="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_0C488DF0CCD7CB35C5753655BAAB5590" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_130D09D1A3068D91668B3655BAAC0FC1_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_0C488DF0CCD7CB35C5753655BAAB5590" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_130D09D1A3068D91668B3655BAAC0FC1_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaap_SegmentOperatingActivitiesDomain_130D09D1A3068D91668B3655BAAC0FC1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementOperatingActivitiesSegmentAxis_0C488DF0CCD7CB35C5753655BAAB5590" xlink:to="loc_us-gaap_SegmentOperatingActivitiesDomain_130D09D1A3068D91668B3655BAAC0FC1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentContinuingOperationsMember" xlink:label="loc_us-gaap_SegmentContinuingOperationsMember_326A49E33316A01A93933655BAACAFDE" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentOperatingActivitiesDomain_130D09D1A3068D91668B3655BAAC0FC1" xlink:to="loc_us-gaap_SegmentContinuingOperationsMember_326A49E33316A01A93933655BAACAFDE" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_1720ADA6A48059D411353655BAAC45E0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_1ED4C21D04D89EC97D423655BAAB68D1" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_1720ADA6A48059D411353655BAAC45E0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_15A24E6F6D733BE348863655BAAC4247_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1720ADA6A48059D411353655BAAC45E0" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_15A24E6F6D733BE348863655BAAC4247_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_15A24E6F6D733BE348863655BAAC4247" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1720ADA6A48059D411353655BAAC45E0" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_15A24E6F6D733BE348863655BAAC4247" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_13D6DA44F01DB8100FF73655BAAC96EB" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_15A24E6F6D733BE348863655BAAC4247" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_13D6DA44F01DB8100FF73655BAAC96EB" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_73C58A62C42916862E2D3655BAAD0CC1" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_73C58A62C42916862E2D3655BAAD0CC1" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCash" xlink:label="loc_us-gaap_RestrictedCash_608AB17AFFDC0626A5853655BAAD722E" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_RestrictedCash_608AB17AFFDC0626A5853655BAAD722E" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_89405FC9D6A6FE3560983655BAAD5059" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_89405FC9D6A6FE3560983655BAAD5059" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_A9F4E1035216006C513C3655BAAE252B" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_A9F4E1035216006C513C3655BAAE252B" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_DisposalgroupIncludingDiscontinuedOperationRestrictedCash" xlink:label="loc_dd_DisposalgroupIncludingDiscontinuedOperationRestrictedCash_893C4192404A6444A76C3655BAAEB41F" xlink:type="locator"/>
<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_dd_DisposalgroupIncludingDiscontinuedOperationRestrictedCash_893C4192404A6444A76C3655BAAEB41F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_7E5AB60D5DDCC98E76BC3655BAAE6A6A" xlink:type="locator"/>
<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_714284E9DEDE67D5C1DE3655BAAD5FCF" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_7E5AB60D5DDCC98E76BC3655BAAE6A6A" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformationSupplementaryInformationNarrativeDetails" xlink:type="extended">
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:type="locator"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_6B93CD85ED432D557E7E1BB0B81CD139" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:to="loc_us-gaap_StatementTable_6B93CD85ED432D557E7E1BB0B81CD139" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_C108EED64274394F8B6B1BB0B81C794F" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_6B93CD85ED432D557E7E1BB0B81CD139" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_C108EED64274394F8B6B1BB0B81C794F" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290_default" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C108EED64274394F8B6B1BB0B81C794F" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290_default" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_C108EED64274394F8B6B1BB0B81C794F" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290" xlink:type="arc"/>
<link:loc xlink:href="dd-20191231.xsd#dd_AccruedandOtherCurrentLiabilitiesMember" xlink:label="loc_dd_AccruedandOtherCurrentLiabilitiesMember_CA6F590CA5355A8962AB1BB0B81D1E63" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290" xlink:to="loc_dd_AccruedandOtherCurrentLiabilitiesMember_CA6F590CA5355A8962AB1BB0B81D1E63" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_0589176B9A3B72D0890B1BB0B81DEAD0" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_0AB4F575DA80FB23A36C1BB0B81C4290" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_0589176B9A3B72D0890B1BB0B81DEAD0" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_ED5D094698B6E885C5381BB0B81D840A" xlink:type="locator"/>
<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_ED5D094698B6E885C5381BB0B81D840A" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8F0D301FD94577415FD31BB0B81EA854" xlink:type="locator"/>
<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8F0D301FD94577415FD31BB0B81EA854" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_2CF3E52B7BC220EF75941BFF0554C557" xlink:type="locator"/>
<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:to="loc_us-gaap_AccountsPayableCurrent_2CF3E52B7BC220EF75941BFF0554C557" xlink:type="arc"/>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableTradeCurrent" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_C76D793DF4AE07F4674B1BFFD660F21D" xlink:type="locator"/>
<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6DC309EEE35806812F331BB0B81D8EFC" xlink:to="loc_us-gaap_AccountsPayableTradeCurrent_C76D793DF4AE07F4674B1BFFD660F21D" xlink:type="arc"/>
</link:definitionLink>
<link:definitionLink xlink:role="http://www.dupont.com/role/SupplementaryInformationTables" xlink:type="extended"/>
</link:linkbase>


5 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/08/24  Corteva, Inc.                     10-K       12/31/23  176:25M
 2/09/23  Corteva, Inc.                     10-K       12/31/22  166:28M
 2/10/22  Corteva, Inc.                     10-K       12/31/21  187:29M
 2/11/21  Corteva, Inc.                     10-K       12/31/20  196:32M
11/05/20  Corteva, Inc.                     S-8        11/05/20    6:168K                                   Donnelley … Solutions/FA
Top
Filing Submission 0001755672-20-000006   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Wed., May 1, 12:47:31.1am ET