what is scallops
Full Definition of SCALLOP. 1. a: any of numerous marine bivalve lamellibranch mollusks (family Pectinidae) that have a radially ribbed shell with the edge undulated and that swim by opening and closing the valves b: the adductor muscle of a scallop as an article of food.2.. a: any of numerous marine bivalve lamellibranch mollusks (family Pectinidae) that have a radially ribbed shell with the edge undulated and that swim by opening and closing the valves b: the adductor muscle of a scallop as an article of food.