Bivalve

//ˈbaɪvælv// noun

Definitions

Adjective
  1. 1
    used of mollusks having two shells (as clams etc.) wordnet
Noun
  1. 1
    Any mollusc belonging to the taxonomic class Bivalvia, characterized by a shell consisting of two hinged sections, such as a scallop, clam, mussel or oyster.
  2. 2
    marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together wordnet
  3. 3
    A pericarp in which the seedcase opens or splits into two parts or valves.

Etymology

From bi- (“two”) + valve.

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