: 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

Word History


New Latin, from Hypnum, genus of mosses

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near Hypnea

Cite this Entry

“Hypnea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Hypnea. Accessed 26 Feb. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!