The diencephalon, also known as the interbrain or betweenbrain, is one of the major areas of the brain, along with the brainstem, cerebellum, and cerebrum. This structure in the brain contains a number of smaller components of the brain which perform a variety of roles to keep the body functioning.
Security code. The security code on a credit card is the brief number that is printed on the card that helps verify its legitimacy. Depending on the card, the security code can be a three-digit or four-digit number, printed on either on the back of the card or the front, and goes by several names. The most common is CVV, which stands for card verification value code.
The CVV code helps ascertain that the customer placing the order actually possesses the credit/debit card and that the card account is legitimate. Each credit card company has its own name for the CVV code, but it functions the same for all major card types. The back panel of most Visa/MasterCard cards contain the full 16-digit account number, followed by the CVV/CVC code.