plural noun
Zo·​an·​thar·​ia | \ ˌzōənˈtha(a)rēə\

Definition of Zoantharia

: a subclass of Anthozoa that comprises forms with a hexamerous arrangement of the usually simple tentacles or septa or both and that includes most of the recent corals and sea anemones

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History and Etymology for Zoantharia

New Latin, from Zoanthus + -aria

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concealment of treason or felony

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