non·​mam·​ma·​li·​an ˌnän-mə-ˈmā-lē-ən How to pronounce nonmammalian (audio)
: not of, relating to, or being a mammal : not mammalian
… the bones … that connect the lower jaw to the skull in nonmammalian vertebrates.James Hanken

Word History

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of nonmammalian was in 1880

Dictionary Entries Near nonmammalian

Cite this Entry

“Nonmammalian.” Dictionary, Merriam-Webster, Accessed 27 Sep. 2023.

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