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from the GNU version of the Collaborative International Dictionary of English

  • 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.

from The Century Dictionary and Cyclopedia

  • n. The typical genus of Zoanthidæ.


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