Zoanthidea

plural noun

Zo·​an·​thid·​ea

ˌzōənˈthidēə

: a small order of Zoantharia comprising solitary or colonial and mostly epizoic coelenterates resembling small sea anemones but distinguished by absence of a pedal disk and by an arrangement of mesenteries suggesting that of the fossil tetracorals

Word History

Etymology

New Latin, from Zoanthus + -idea

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