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Wikipedia definition
1. Card security codeThe card security code (CSC), sometimes called Card Verification Data (CVD), Card Verification Value (CVV or CVV2), Card Verification Value Code (CVVC), Card Verification Code (CVC or CVC2), Verification Code (V-Code or V Code), or Card Code Verification (CCV) are different terms for security features for credit or debit card transactions, providing increased protection for the merchants against credit card fraud.
Read “Card security code” on English Wikipedia
Read “セキュリティコード” on Japanese Wikipedia
Read “Card security code” on DBpedia

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