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n. pl. (Zool.) An order of Reptilia, which includes the lizards. They are closely related to the snakes, and like the latter, usually have the body covered with scales or granules. They usually have eyelids, and most of them have well-formed legs; but in some groups (amphisbæna, glass-snake, etc.) the legs are wanting and the body is serpent like. None are venomous, unless Heloderma be an exception. The order includes the chameleons, the Cionocrania, or typical lizards, and the amphisbænas. See Amphisbæna, Gecko, Gila monster, and Lizard.