Bivalve meaning

bī'vălv'
(botany) A pericarp in which the seed case opens or splits into two parts or valves.
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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.
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Having a shell consisting of two hinged valves.
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Consisting of two similar separable parts.
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Any of a class (Bivalvia) of mollusks, including mussels and clams, having a shell consisting of two valves hinged together.
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Having a shell of two valves hinged together.
adjective
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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.
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Having a shell consisting of two hinged valves.
adjective
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Consisting of two similar separable parts.
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Any of various mollusks of the class Bivalvia, having a shell consisting of two halves hinged together. Clams, oysters, scallops, and mussels are bivalves. The class Bivalvia is also called Pelecypoda, and was formerly called Lamellibranchia.
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Any mollusc belonging to the taxonomic class Bivalvia, characterized by a shell consisting of two hinged sections, such as a scallop, clam, mussel or oyster.
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Origin of bivalve

bi- (“two”) +‎ valve