1. any of various tropical old world lizards of the family Chamaeleonidae, characterized by their ability to change color.
2. see anole.
3. A changeable or inconstant person: "in his testimony, the nominee came off as . . . a chameleon of legal philosophy” ( joseph A. Califano, jr.)

1. A small to mid-size reptile, of the family Chamaeleonidae, and one of the best known lizard families able to change color and project its long tongue.
2. A person with inconstant behavior; one able to quickly adjust to new circumstances.
3. describing something that changes color.

1. A lizardlike reptile of the genus Chamæleo, of several species, found in africa, asia, and europe. the skin is covered with fine granulations; it has eyes which can move separately, the tail is prehensile, and the body is much compressed laterally, giving it a high back. it is remarkable for its ability to change the color of its skin to blend with its surroundings.
2. a person who changes opinions, ideas, or behavior to suit the prevailing social climate; an opportunist.

1. A lizard-like reptile of the family Chamæleontidæ, having a naked body, a prehensile tail, feet suited for grasping branches, and the eye covered by a single circular eyelid with an aperture in the center.
2. in the southern united states and west indies, a true lizard of the family Anolididæ or Iguanidæ. also chamæleo.
3. [capitalized] A constellation invented by Bayer, situated beneath the feet of the centaur.
4. same as chamæleon, 3.

1. lizard of africa and madagascar able to change skin color and having a projectile tongue
2. a faint constellation in the polar region of the southern hemisphere near apus and mensa
3. a changeable or inconstant person