| bivalve | (noun) marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together | Synonyms: lamellibranch, pelecypod |
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| univalve | (noun) a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes | Synonyms: gastropod |
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| valve | (noun) one of the paired hinged shells of certain molluscs and of brachiopods | - |
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| (noun) the entire one-piece shell of a snail and certain other molluscs | - |
| (noun) control consisting of a mechanical device for controlling the flow of a fluid | - |
| (noun) device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone | - |
| (noun) a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it | - |
| valvelet | (noun) a small valve | Synonyms: valvula, valvule |
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| valvotomy | (noun) incision into a stenosed cardiac valve to relieve the obstruction | Synonyms: valvulotomy |
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| valvula | (noun) a small valve | Synonyms: valvelet, valvule |
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| valvule | (noun) a small valve | Synonyms: valvelet, valvula |
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| valvulitis | (noun) inflammation of a valve (especially of a cardiac valve as a consequence of rheumatic fever) | - |
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| valvulotomy | (noun) incision into a stenosed cardiac valve to relieve the obstruction | Synonyms: valvotomy |
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