noun pro·avis \(ˈ)prō¦āvə̇s, -¦äv-\

Definition of proavis



  1. :  a hypothetical primitive animal intermediate between a reptile and a bird

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Origin and Etymology of proavis

New Latin, from 1pro- + Latin avis bird — more at aviary

Seen and Heard

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to cast off or become cast off

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