subclass Opisthobranchia

Thesaurus

Noun

1.

subclass Opisthobranchia - gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares Opisthobranchia class Gasteropoda, class Gastropoda, Gasteropoda, Gastropoda - snails and slugs and their relatives Nudibranchia, order Nudibranchia - comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug class - (biology) a taxonomic group containing one or more orders

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.