English to English Dictionary -actinians

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Actinia :: Actinia (n.) An animal of the class Anthozoa, and family Actinidae. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.]..

Actinia :: Actinia (n.) A genus in the family Actinidae.

Actiniae :: Actiniae (pl. ) of Actini.

Actinias :: Actinias (pl. ) of Actini.

Hexactinia :: Hexactinia (n. pl.) The Anthozoa.

Hydractinian :: Hydractinian (n.) Any species or marine hydroids, of the genus Hydractinia and allied genera. These hydroids form, by their rootstalks, a firm, chitinous coating on shells and stones, and esp. on spiral shells occupied by hermit crabs. See Illust. of Athecata..

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