Actinia (&unr_;), n.; pl. L. Actiniæ (&unr_;), E. Actinias (&unr_;). [Latinized fr. Gr. &unr_;, &unr_;, ray.] (Zoöl.) (a) An animal of the class Anthozoa, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.]. (b) A genus in the family Actinidæ.
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