: not exhibiting or produced by a mutation : not mutant
a nonmutant gene
nonmutant mice
nonmutant proteins

Word History

First Known Use

1918, in the meaning defined above

Time Traveler
The first known use of nonmutant was in 1918

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Cite this Entry

“Nonmutant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nonmutant. Accessed 7 Jul. 2026.

Medical Definition

nonmutant

adjective
: not mutant
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