| nudibranchia | (n) comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug, Syn. order Nudibranchia |
| Nudibranch | a. (Zool.) Of or pertaining to the Nudibranchiata. -- |
| 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 ] |
| Nudibranchiate | a. & n. (Zool.) Same as Nudibranch. [ 1913 Webster ] |
| 海牛 | [かいぎゅう;カイギュウ, kaigyuu ; kaigyuu] (n) (uk) (See 海鼠) sea slug (various orthogastropod species, esp. of order Nudibranchia); nudibranch [Add to Longdo] |