noun An·nu·lar·ia \ˌanyəˈla(a)rēə\

Definition of Annularia

  1. :  a large genus of fossil pteridophytic plants of the order Equisetales having annuli formed by the basal sheaths of the leaf whorls

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Origin and Etymology of annularia

New Latin, from Latin annulus + New Latin -aria

First Known Use: 1830

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a brief usually trivial fact

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