a. (Zool.) Of or pertaining to the Nudibranchiata. --
‖n. pl. [ NL. See Nude, and Branchia. ] (Zool.) A division of opisthobranchiate mollusks, having no shell except while very young. The gills are naked and situated upon the back or sides. See Ceratobranchia. [ 1913 Webster ]
a. & n. (Zool.) Same as Nudibranch. [ 1913 Webster ]