Also: pelecypod, lamellibranchany 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
Also: pelecypod, lamellibranchof, relating to, or belonging to the Pelecypoda
Also: bivalvate (baɪˈvælveɪt) biologyhaving or consisting of two valves or similar partsa bivalve seed capsule
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.