[cha.me.leon] n, often attrib [ME camelion, fr. MF, fr. L chamaeleon, fr. Gk chamaileon, fr. chamai on the ground + leon lion--more at humble] (14c) 1: any of a family (Chamaeleontidae) of chiefly arboreal Old World lizards with prehensile tail, independently movable eyeballs, and unusual ability to change the color of the skin
2. a: a person given to often expedient or facile change in ideas or character b: one that is subject to quick or frequent change esp. in appearance
3: american chameleon -- cha.me.le.on.ic adj -- cha.me.leon.like adj