What is the meaning of Credit card?

Credit card system is a type of retail transaction settlement and credit system, named after the small plastic card issued to users of the system. A credit card is different from a debit card in that the credit card issuer lends the consumer money rather than having the money removed from an account. It is also different from a charge card (though this name is often used to describe credit cards by the public) in that charge cards do not extend the user credit - the charges must be paid each month in full. Most credit cards are the same shape and size, as specified by the ISO 7810 standard.