IPA: //ˈkɑːrdˌhoʊldər//
KK: /ˈkɑrdˌhoʊldər/
A person who has a card, particularly a credit card, that allows them to make purchases or access services.
She is the cardholder of the credit card used for the online purchase.
Cardholder → It is formed from "card" (from Old French *carte*, meaning a piece of paper or document) and "holder" (from Old English *holdan*, meaning to keep or maintain). A cardholder is someone or something that keeps or maintains a card.
Think of a 'card' as a piece of paper that you 'hold' — that's why a cardholder is someone who keeps a card.