Dictionary entry

Nudibranchiata

Webster's Dictionary 1913

‖Nu′di‐bran′chi‐a″ta (?), n. pl. [NL. See Nude, and Branchia.] (Zoöl.) 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.