Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of actinias is as below...

Zoanthus :: Zoanthus (n.) A genus of Actinaria, including numerous species, found mostly in tropical seas. The zooids or polyps resemble small, elongated actinias united together at their bases by fleshy stolons, and thus forming extensive groups. The tentacles are small and bright colored..

Polyactinia :: Polyactinia (n. pl.) An old name for those Anthozoa which, like the actinias, have numerous simple tentacles..

Actinias :: Actinias (pl. ) of Actini.

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