Credit Card Glossary

Puzzled by credit card jargon? Browse the glossary for the definitions of common and confusing credit card terms.

Account number

The unique combination of 16 digits that identify a credit card account as belonging to a certain account holder. The account number found on a credit card is coded to indicate which industry has issued the card, the card network (MasterCard, Visa, American Express or Discover) and the individual account holder.