Zo·​an·​thus | \ zōˈan(t)thəs \

Definition of Zoanthus

: a large genus (the type of the family Zoanthidae) of zoanthidean colonial polyps that are widely distributed in tropical seas, are united at their bases by stolons, resemble groups of small anemones, and have short, brightly colored tentacles

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!

History and Etymology for Zoanthus

New Latin, from zo- + Greek anthos flower

Keep scrolling for more

Learn More about Zoanthus

Statistics for Zoanthus

Cite this Entry

“Zoanthus.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Zoanthus. Accessed 29 January 2020.

Comments on Zoanthus

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


to assert without proof or before proving

Get Word of the Day daily email!

Test Your Vocabulary

January 2020 Words of the Day Quiz

  • image1642096650
  • Which is a synonym of bonhomie?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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