noun al·cy·o·noid \ˈal-sē-ə-ˌnȯid\

Definition of alcyonoid



  1. :  one of the Alcyonaria

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 alcyonoid

New Latin Alcyonoidea

First Known Use: 1857

Seen and Heard

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


a rounded knoll or a ridge of ice

Get Word of the Day daily email!