- IQ
-
noun
Etymology: intelligence quotient
Date: 1920
1. a number used to express the apparent relative intelligence of a person: as
a. the ratio of the mental age (as reported on a standardized test) to the chronological age multiplied by 100
b. a score determined by one's performance on a standardized intelligence test relative to the average performance of others of the same age
2. proficiency in or knowledge of a specified subject <nobody questioned his hockey IQ>
New Collegiate Dictionary. 2001.