Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A standard, model, or pattern regarded as typical: the current middle-class norm of two children per family.
  • n. Mathematics A mode.
  • n. Mathematics An average.
  • n. Mathematics The length of a vector.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To endow (a vector space, etc) with a norm.
  • n. That which is regarded as normal or typical.
  • n. A rule that is enforced by members of a community.
  • n. A sentence with non-descriptive meaning, such as a command, permission, or prohibition.
  • n. A function, generally denoted or , that maps vectors to non-negative scalars and has the following properties:

from the GNU version of the Collaborative International Dictionary of English

  • n. A rule or authoritative standard; a model; a type.
  • n. A typical, structural unit; a type.

from The Century Dictionary and Cyclopedia

  • n. A rule; a pattern; a model; an authoritative standard.
  • n. In biology, a typical structural unit; a type.
  • n. In petrography, in the quantitative classification (see rock), the standard mineral composition of an igneous rock, that is, the chemical composition expressed in terms of standard minerals.
  • n. An abbreviation of Norman.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a statistic describing the location of a distribution
  • n. a standard or model or pattern regarded as typical

Etymologies

French norme, from Old French, from Latin norma, carpenter's square, norm; see gnō- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Back-formation from normed. (Wiktionary)
From Latin norma ("a carpenter's square, a rule, a pattern, a precept"). (Wiktionary)

Examples

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