bivalve

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bivalve

(bī′vălv′)
n.
Any of numerous freshwater and marine mollusks of the class Bivalvia, having a shell consisting of two hinged valves connected by a ligament, and including the clams, mussels, oysters, and scallops. Also called lamellibranch, pelecypod.
adj.
1. Having a shell consisting of two hinged valves.
2. Consisting of two similar separable parts.

bi′valved′ adj.

bivalve

any marine or freshwater mollusc of the class Lamellibranchiata (Pelecypoda) having two hinged parts to its shell. BRACHIOPODS are also bivalves, in that there are two hinged parts to the shell, but the term is usually restricted to true molluscs.

bivalve

shellfish members of the Class Bivalvia. Molluscs enclosed between two shells which are hinged together. Includes oysters, clams, arkshells, mussels. Called also lamellibranch.