- The definition of IQ, which stands for Intelligence Quotient is a number indicating how smart someone is.
A smart person's score of 130 on an intelligence test is an example of IQ.
a number intended to indicate a person's level of intelligence: it is the mental age (as shown by intelligence tests) multiplied by 100 and divided by the chronological age
Origin of IQ; from i(ntelligence) q(uotient)
Origin of i.q.Classical Latin idem quod the same as
Latin idem quod (the same as)