The Simple English Wikipedia has an article on: Bivalve Pronunciation IPA (key): /ˈbaɪvælv/ Noun Singular bivalve Plural bivalves (countable) A bivalve is any type of mollusc that belongs to the taxonomic class Bivalvia. Bivalves have a shell that consists of two hinged sections, such as a scallop, clam, mussel or oyster.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads