noun
- any mollusk of the class Pelecypoda (Lamellibranchiata), characterized by a bivalve shell enclosing the headless body and lamellate gills, comprising the oysters, clams, mussels, and scallops.
adjective
- Also pel·e·cyp·o·dous [pel-uh–sip–uh-duh s] /ˌpɛl əˈsɪp ə dəs/. belonging or pertaining to the Pelecypoda.
noun, adjective
- another word for bivalve (def. 1), bivalve (def. 2)