Zool. rare–1. [f. L. tinctu-s (see TINCT sb.) + mūtānt-em changing.] An animal that changes color. So Tinctumutation, change of color.
1895. J. Weir, in Pop. Sci. Monthly, Jan., 388. The chameleon is the best known of all the tinctumutants. Ibid. Physiological changes that take place in the act of tinctumutation.
