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1. (n.) bivalve
any mollusk, as the oyster or mussel, of the class Bivalvia, having hinged lateral shells, a soft body enclosed by a mantle, sheetlike gills, and often a retractile foot.
2. (adj.) bivalve
having two shells, usu. united by a hinge.
3. bivalve
having two similar parts hinged together.
Etymology: (1670–80)
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| Definition of 'bivalve' |
Princeton's WordNet |
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1. (adj) bivalve, pelecypod, lamellibranch
marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
2. (adj) bivalve, bivalved
used of mollusks having two shells (as clams etc.)
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| Definition of 'bivalve' |
Webster Dictionary |
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1. (adj) bivalve
having two shells or valves which open and shut, as the oyster and certain seed vessels
2. (noun) bivalve
a mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth. The shell is closed by the contraction of two transverse muscles attached to the inner surface, as in the clam, -- or by one, as in the oyster. See Mollusca
3. (noun) bivalve
a pericarp in which the seed case opens or splits into two parts or valves
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Definitions of bivalve 
