Main Entry: IQ

Pronunciation: \ˌī-ˈkyü\

Function: noun

Etymology: intelligence quotient

: 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