noun Hyp·nea \ˈhipnēə\

Definition of Hypnea

  1. :  a genus (the type of the family Hypneaceae) comprising red algae of the order Gigartinales that have a thallus of terete fleshy branches with the tips curving inward like tendrils and that include one (H. musciformis) which is occasionally used as a source of agar

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 hypnea

New Latin, from Hypnum, genus of mosses

Seen and Heard

What made you want to look up Hypnea? 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!