The definition of IQ, which stands for Intelligence Quotient is a number indicating how smart someone is.(abbreviation)
A smart person's score of 130 on an intelligence test is an example of IQ.
See IQ in Webster's New World College Dictionary
noun pl. IQ's
Origin: < i(ntelligence) q(uotient)
Origin: L idem quodthe same as
See IQ in American Heritage Dictionary 4
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