Dictionary entry

Gymnocopa

Webster's Dictionary 1913

‖Gym′no‐co″pa (jĭm′nō̍‐kō″pȧ), n. pl. [NL., fr. Gr. γυμνόσ naked + κώπη an oar.] (Zoöl.) A group of transparent, free-swimming Annelida, having setæ only in the cephalic appendages.