mutant

Universal Words adjective, noun adjective (biology) (of a living thing) different in some way from others of the same kind because of a change in its GENETIC structure: a mutant gene * a mutant strain of the virus noun 1 (biology) a living thing with qualities that are different from its parents' qualities because of a change in its GENETIC structure 2 (informal) (in stories about space, the future, etc.) a living thing with an unusual and frightening appearance because of a change in its GENETIC structure