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Synonyms

IQ

1 American  
Psychology.

  1. intelligence quotient.

i.q. 2 American  

abbreviation

  1. the same as.

IQ 1 British  

abbreviation

  1. intelligence quotient

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
i.q. 2 British  

abbreviation

  1. idem quod

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
iq 3 British  

abbreviation

  1. Iraq

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of IQ1

First recorded in 1960–65

Origin of i.q.2

From Latin idem quod

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers say this interaction could partly inflate the estimated genetic influence of IQ, potentially by as much as 15 percentage points.

From Science Daily • May 6, 2026

I always hire people who have a higher IQ than I do.

From MarketWatch • May 6, 2026

Toddlers must ace IQ tests to land spots at the most coveted schools, and tech execs wield seven-figure donations to advance their children’s interests.

From The Wall Street Journal • Apr. 30, 2026

“Just the things he can do, the IQ he has, what he can see, the way that he moves, the length, the size,” Udo-Ema said, “he’s the most talented guy I’ve ever seen.”

From Los Angeles Times • Apr. 27, 2026

She sets me to work “zoning” the Bobbie Brooks knit summer dresses, a task that could serve as an IQ test for the severely cognitively challenged.

From "Nickel and Dimed: On (Not) Getting By in America" by Barbara Ehrenreich

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.