actinia

noun
ac·​tin·​ia | \ ak-ˈti-nē-ə\

Definition of actinia

1 capitalized, in some classifications : a genus of sea anemones nearly coextensive with the order Actiniaria
2 plural actiniae\ ak-​ˈti-​nē-​ˌē\ or actinias : any sea anemone or related animal

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First Known Use of actinia

1752, in the meaning defined at sense 1

History and Etymology for actinia

borrowed from New Latin, from Greek aktīn-, aktís “ray, beam” + New Latin -ia -ia entry 1

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Dictionary Entries near actinia

-actine

acting

acting area

actinia

actinian

Actiniaria

actinic

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Time Traveler for actinia

The first known use of actinia was in 1752

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