(1) The number on the front or back of credit cards that is used for security. See CSC.
(2) Any password or passcode used for security. See password.
"security code." YourDictionary, n.d. Web. 24 May 2018. <http://www.yourdictionary.com/security-code>.
security code. (n.d.). Retrieved May 24th, 2018, from http://www.yourdictionary.com/security-code