noun al·cy·o·nar·ian \ˌal-sē-ə-ˈner-ē-ən\

Definition of alcyonarian

  1. :  any of a subclass (Alcyonaria) of colonial anthozoans (such as the sea pens) having polyps with eight branched tentacles and eight septa

Origin and Etymology of alcyonarian

ultimately from Greek alkyoneion, a zoophyte, from neuter of alkyoneios of a kingfisher, from alkyon kingfisher; from its resemblance to a kingfisher's nest

First Known Use: 1861

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