plural noun Rhy·ni·a·ce·ae \ˌrīnēˈāsēˌē\

Definition of Rhyniaceae

  1. :  a family of Paleozoic plants (order Psilophytales) known chiefly from the genera Rhynia and Horneophyton

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Origin and Etymology of rhyniaceae

New Latin, from Rhynia, type genus + -aceae

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to criticize severely

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