(1) A standardized test for measuring psychologic, personality, or behavioral characteristics.score, test. (2) SYN: squama. (3) A small, thin plate of horny epithelium, resembling a fish scale, cast off from the skin. (4) To desquamate. (5) To remove tartar from the teeth. (6) A device by which some property can be measured. [L. scala, a stairway]