noun Di·oön \dīˈōˌän\

Definition of Dioön

  1. :  a genus of plants (family Cycadaceae) having a somewhat conical trunk crowned by a large tuft of pinnate leaves with spine-tipped pinnae

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Origin and Etymology of dioön

New Latin, from di- + -oön (from Greek ōion egg) — more at egg

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a brief usually trivial fact

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