Definition of nonavian
: not of or relating to birds : not avian … assorted nonavian creatures whirring, buzzing and croaking. — Richard Conniff nonavian anatomy; also : not including any members of the class (Aves) comprising birds Whereas the last of the nonavian dinosaurs certainly perished 64.5 million years ago, many other animals survived … — James Gurney
First Known Use of nonavian
Seen and Heard
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