Definition of: chatoyant

(shə·toi′ənt, Fr. shá·twá·yä) adjective
1. Possessing a changeable luster, like that of a cat-s eye in the dark.
2. Exhibiting a narrow band of light, as certain gemstones when cut and polished.
—noun A stone having such a luster; cat's–eye. [<F, ppr. of chatoyer change, as a cat's eye]
—cha·toy′an·cy noun