plural noun Nu·di·bran·chia

Definition of Nudibranchia

  1. :  a suborder of Opisthobranchia comprising numerous highly varied marine gastropod mollusks lacking a shell in the adult state and without true ctenidia and typically having a body suggesting that of a slug usually with brightly colored often branching respiratory cerata on the back




\-ēə̇t, -ēˌāt\ adjective or noun

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of nudibranchia

New Latin, from nudi- + -branchia

Seen and Heard

What made you want to look up Nudibranchia? Please tell us where you read or heard it (including the quote, if possible).


capable of being understood in two ways

Get Word of the Day daily email!