mutant
Americanadjective
noun
noun
adjective
Other Word Forms
- unmutant adjective
Etymology
Origin of mutant
1900–05; < Latin mūtant- (stem of mūtāns ), present participle of mūtāre to change; -ant
Compare meaning
How does mutant compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
When an animal's genes change, or mutate, the new form of the animal that results is a mutant. One example of such a mutant is a blue lobster. Another is the teenage mutant ninja turtle. You can use the scientific term mutant for any plant or animal that's the result of a change, or mutation, in the DNA of that organism. When the word is used as an adjective, it describes something having to do with this kind of mutation, like a mutant chromosome or a mutant lobster. Mutant stems from the Latin mutantem, which means "changing."
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In some cases, mutant forms of MeCP2 are produced in smaller amounts or have reduced ability to bind DNA, which is essential for carrying out its role in controlling gene activity.
From Science Daily • Mar. 6, 2026
Prior to Disney’s acquisition of Fox in 2019, the iconic mutant superhero team headlined its own franchise, which kicked off with the 2000 film “X-Men.”
From Los Angeles Times • Jan. 6, 2026
A pinched approximation of a muted trumpet suggests some kind of mutant jazz unfolding nearby, while unpredictable pitch changes conjure visions of a tape slipping off a spool.
From The Wall Street Journal • Nov. 18, 2025
The mutant baby monster is the manifestation of that fear, in the same way Lilly’s visitation is the congealed manifestation of her torment.
From Salon • Nov. 9, 2025
But I need to get that dashiki back—even if it means growing a mutant toe or something.
From "Kwame Crashes the Underworld" by Craig Kofi Farmer
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
