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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.

Matcha mania may have been sweeping the world, but Nielsen IQ data shows sales of other types of tea - including green tea, kombucha and cold carbonated tea - are all rising, too.

From BBC • May 8, 2026

The participants took IQ tests at age 23.

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

Over the years, an enormous amount of research has been done in an attempt to determine how a person’s performance on an IQ test like the Raven’s translates to real- life success.

From "Outliers" by Malcolm Gladwell

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.