# norm

/ˈnɔɹm/ (US) · /nˈɔːm/ (UK)

Source: https://englishreference.com/word/norm
Updated: 2026-08-15

## Senses

### 1. social standard

noun · CEFR B2

a rule or way of behaving that most people in a group follow and expect.

For teachers: a standard or pattern of social behavior that is accepted or expected within a particular group or community.

- In some cultures, it is the norm to take off your shoes before entering a house.
- Sociologists study how cultural norms evolve over time, particularly in response to rapid technological changes that disrupt traditional social interactions.

Usage: Often used in the plural 'norms' when discussing cultural expectations.

### 2. typical situation

noun · CEFR B2

something that is usual, typical, or expected.

For teachers: a situation or level of performance that is typical or average for a particular group.

- Working late every night has unfortunately become the norm at this office.
- The mild temperatures recorded this winter are well above the seasonal norm for this region of the country.

### 3. mathematical length

noun · CEFR C1 · Technical

a rule used to calculate the length or size of a vector.

For teachers: a function that assigns a strictly positive length or size to each vector in a vector space.

- The professor explained how to calculate the norm of a vector in three-dimensional space.
- In linear algebra, the Euclidean norm provides the standard distance from the origin to a given point in space.

### 4. to assign a standard

verb · CEFR C2 · Technical

to set a standard for something or to give a mathematical space a rule for length.

For teachers: to normalize or to endow a mathematical structure, such as a vector space, with a norm.

- The researchers had to norm the data before they could compare the two different groups.
- The mathematician demonstrated how to norm the vector space using a non-standard metric to achieve the desired convergence properties.

Usage: This verb is transitive and requires a direct object.

## Examples

- Wearing a suit to this office is the norm.
- In many cultures, it is the social norm to bring a small gift when visiting someone's home for dinner.
- Sociologists study how individuals internalize the cultural norm of their upbringing, often following these unwritten rules without ever consciously questioning their origin or utility.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.