norm
1 Americannoun
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a standard, model, or pattern.
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general level or average.
Two cars per family is the norm in most suburban communities.
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a behavior pattern or trait considered typical of a particular social group.
The patients regained the norms of everyday life after their hospitalization.
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Sociology. a pattern or standard of behavior expected of each member of a social group.
In many countries, cultural norms result in women bearing primary responsibility for childcare.
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Education.
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a designated standard of average performance of people of a given age, background, etc.
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a standard based on the past average performance of a given individual.
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Mathematics.
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a real-valued, nonnegative function whose domain is a vector space, with properties such that the function of a vector is zero only when the vector is zero, the function of a scalar times a vector is equal to the absolute value of the scalar times the function of the vector, and the function of the sum of two vectors is less than or equal to the sum of the functional values of each vector. The norm of a real number is its absolute value.
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the greatest difference between two successive points of a given partition.
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abbreviation
noun
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an average level of achievement or performance, as of a group or person
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a standard of achievement or behaviour that is required, desired, or designated as normal
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sociol an established standard of behaviour shared by members of a social group to which each member is expected to conform
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maths
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the length of a vector expressed as the square root of the sum of the square of its components
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another name for mode
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geology the theoretical standard mineral composition of an igneous rock
abbreviation
noun
abbreviation
Other Word Forms
Etymology
Origin of norm
First recorded in 1820–30; from Latin norma “carpenter's square, rule, pattern”
Explanation
A statistical average is called the norm. If you live in a town made up mostly of farmers but your trade is basket weaving, then you're outside the norm. The noun norm is from the Latin word norma, which was a carpenter's square or pattern used in construction to make regular corners. Now we use norm for anything that sets a standard. You can score within the norm on a standardized test, score above the norm on an IQ test, or fall below the norm in acceptable standards of dress if you wear a halter top and cut-off jeans to a formal ball.
Vocabulary lists containing norm
"The Hill We Climb," by Amanda Gorman
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Unit 3: Compelling Evidence
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Divergent
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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 thought that Norm will no longer be there for significant family moments breaks my heart."
From BBC • Apr. 29, 2026
Norm Eisen: People don’t want to hear about Locke and Burke and John Rawls.
From Slate • Apr. 20, 2026
TAE closed a $150 million fundraising round last summer, part of the $500 million Binderbauer estimated he needed to build a successor to Norm.
From The Wall Street Journal • Mar. 28, 2026
Palmer said he frequently gets phone calls from Norm Chow, his offensive coordinator at USC, who delivers a simple and powerful message.
From Los Angeles Times • Aug. 22, 2025
"I bet the EagleEye team was pissed about that," Norm said.
From "The Martian" by Andy Weir
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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.