nudibranch

noun nu·di·branch \ˈnü-də-ˌbraŋk, ˈnyü-\

plural nu·di·branchs

Definition of NUDIBRANCH

: any of an order (Nudibranchia) of marine opisthobranch mollusks without a shell in the adult state and without true gills

— nudibranch adjective

New Latin Nudibranchia, from Latin nudus + Greek branchia gills

First Known Use: 1844

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