Ac·ti·na·ri·a n. pl. Zool. An order 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.
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An·tho·zo·a n. pl. Zool. The class of the Cœlenterata which includes the corals and sea anemones. The three principal groups or orders are Acyonaria, Actinaria, and Madreporaria.
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Actinaria
n : sea anemones [syn: Actiniaria, order Actiniaria, order
Actinaria]