plural noun As·cid·i·a·cea

Definition of Ascidiacea

  1. :  a class of tunicates comprising simple ascidians, compound ascidians that reproduce by budding and remain connected together embedded in a common test, and certain atypical pelagic compound ascidians (as of the genus Pyrosoma)

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 ascidiacea

New Latin, from 1Ascidia + -acea

Seen and Heard

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


a trip made at another's expense

Get Word of the Day daily email!