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

Word History


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-

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of actinian was in 1869

Dictionary Entries Near actinian

Cite this Entry

“Actinian.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2024.

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