Main Entry:

nu·di·branch

Pronunciation:

\ˈnü-də-ˌbraŋk, ˈnyü-\

Function:

noun

Inflected Form(s):

plural nu·di·branchs

Etymology:

New Latin Nudibranchia, from Latin nudus + Greek branchia gills

Date:

1844

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

— nudibranch adjective

[nudibranch illustration]