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proavis

noun
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pro·​avis | \ (ˈ)prō¦āvə̇s, -¦äv- \
plural -es

Definition of proavis

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

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History and Etymology for proavis

New Latin, from pro- entry 1 + Latin avis bird

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“Proavis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proavis. Accessed 3 Dec. 2020.

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