bivalve

[ bahy-valv ]
/ ˈbaɪˌvælv /

noun

Also called lamellibranch. Zoology. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills.

adjective

Botany. having two valves, as a seedcase.
Zoology. having two shells, usually united by a hinge.
having two similar parts hinged together.

Origin of bivalve

First recorded in 1670–80; bi-1 + valve

OTHER WORDS FROM bivalve

bi·val·vu·lar [bahy-val-vyuh-ler] /baɪˈvæl vyə lər/, adjective

Example sentences from the Web for bivalve

British Dictionary definitions for bivalve

bivalve
/ (ˈbaɪˌvælv) /

noun

Also: pelecypod, lamellibranch any marine or freshwater mollusc of the class Pelecypoda (formerly Bivalvia or Lamellibranchia), having a laterally compressed body, a shell consisting of two hinged valves, and gills for respiration. The group includes clams, cockles, oysters, and mussels

adjective

Also: pelecypod, lamellibranch of, relating to, or belonging to the Pelecypoda
Also: bivalvate (baɪˈvælveɪt) biology having or consisting of two valves or similar parts a bivalve seed capsule

Derived forms of bivalve

bivalvular, adjective

Scientific definitions for bivalve

bivalve
[ bīvălv′ ]

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. Compare univalve.