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IQ stands for Intelligence Quotient.
ID for identity, or material proving your identity.


IQ
intelligence quotient

A number meant to measure intelligence. Once the standard measure of human mental capacity; now widely considered to be neither accurate nor fair. Controversy exists today over the effect of race and class on scores and whether IQ tests really measure intelligence. Tests of special aptitudes and personality factors are now favored over the pure intelligence test.


The IQ was originally calculated using the ratio of a person's “mental age” (as measured by a standardized test) and chronological age. An IQ between 90 and 110 is considered average; over 120, superior. (See Stanford-Binet scale.) Few tests still include the controversial notion of mental age.






ID

ID1 (ī'dē') Informal.
n.
A form of identification, especially an ID card.

tr.v., ID'ed, ID'·ing, ID's.
To check the identification of, especially in order to verify legal age; card: The bouncer ID'ed everyone who

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