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 actinaria is as below...

Helianthoidea :: Helianthoidea (n. pl.) An order of Anthozoa; the Actinaria.

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..

Anthozoa :: Anthozoa (n. pl.) The class of the Coelenterata which includes the corals and sea anemones. The three principal groups or orders are Acyonaria, Actinaria, and Madreporaria..

Actinaria :: Actinaria (n. pl.) A large division of Anthozoa, including those which have simple tentacles and do not form stony corals. Sometimes, in a wider sense, applied to all the Anthozoa, expert the Alcyonaria, whether forming corals or not..

Zoanthacea :: Zoanthacea (n. pl.) A suborder of Actinaria, including Zoanthus and allied genera, which are permanently attached by their bases..

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