actinian

noun
ac·​tin·​i·​an | \ ak-ˈti-nē-ən How to pronounce actinian (audio) \

Definition of actinian

First Known Use of actinian

1869, in the meaning defined above

History and Etymology for actinian

New Latin Actinia, a sea anemone genus (from Greek aktīn-, aktís "ray, beam" + New Latin -ia -ia entry 1) + -an entry 1 — more at actin-

Keep scrolling for more

Learn More about actinian

Statistics for actinian

Look-up Popularity

Time Traveler for actinian

The first known use of actinian was in 1869

See more words from the same year

More from Merriam-Webster on actinian

Rhyming Dictionary: Words that rhyme with actinian

Comments on actinian

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

WORD OF THE DAY

a period when something is suspended

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ
Love words? Need even more definitions?

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