The term CREDIT CARD MATERIAL can be summarized as PLASTIC, which is a seven-letter word. PLASTIC is a synthetic or semi-synthetic material that is made from polymers, which are long molecules composed of repeating structural units. It is a versatile material that is used in many everyday items, such as packaging, toys, and credit cards. PLASTIC is lightweight, durable, and relatively inexpensive to produce, making it an ideal material for credit cards.