Pronunciation: (en'tu-prokt"),[key] —n.Zool. any of various sessile, chiefly marine, mosslike animals of the phylum Entoprocta (formerly a subphylum of Bryophyta), occasionally solitary polyps but usually forming branching colonies, each individual polyp having an almost closed ring of tentacles within which lie the mouth and anus.
—adj. belonging or pertaining to the phylum Entoprocta. Also called endoproct. Cf. ectoproct.