1. (adj)gastropod, univalve a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes Synonyms: univalve, gastropod Antonyms: bivalved, bivalve, lamellibranch, pelecypod, pelecypodous
2. (adj)univalve used of mollusks, especially gastropods, as snails etc. Antonyms: pelecypod, lamellibranch, pelecypodous, bivalve, bivalved