unionid

== English == === Etymology === From taxonomic name Unionidae. Compare unionoid. === Noun === unionid (plural unionids) (zoology) Any member of the family Unionidae of bivalves. Synonyms: unioid, unionoid ==== Translations ==== === Adjective === unionid (comparative more unionid, superlative most unionid) (zoology) Relating to, resembling, or characteristic of a member of the family Unionidae of bivalves. Synonyms: unioniform, unionoid === References ===