Acquirer. A bankcard association member that initiates and maintains relationships with Merchants that accept Visa or MasterCard cards.
Cardholder. The customer to whom a card has been issued or the individual authorized to use the card.
Cardholder Data. All personally identifiable data about the cardholder and relationship to the Merchant (i.e., account number, expiration date, data provided by the Merchant, other electronic data gathered by the merchant/agent and so on).