Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun opisthobranchia

1 sense of opisthobranchia

Sense 1
Opisthobranchia, subclass Opisthobranchia -- (gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares)
       => class -- ((biology) a taxonomic group containing one or more orders)