a. [ Gr. &unr_;, &unr_;, ray. ] (Zool.) Pertaining to the part of a radiate animal which contains the mouth. L. Agassiz. [ 1913 Webster ]
‖n. pl. [ NL., from Gr. &unr_;, &unr_;, ray. ] (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. [ 1913 Webster ]
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a. Of or pertaining to actinism;
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n.