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1. A standard or model or pattern regarded as typical
   "the current middle-class norm of two children per family"
    
2. A statistic describing the location of a distribution
   "it set the norm for American homes"
   - average
    
3. (mathematics) the length of a vector

Derived forms: norms

See also: normative

Type of: criterion, measure, standard, statistic, touchstone

Encyclopedia: Norm