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Definition of: norm
(nôrm) noun
1. A rule or authoritative standard; a model, type, pattern, or value considered as representative of a specified group.
2. Psychol. The average or median of performance in a given function or test, regarded as a standard for the group concerned.
3. Stat. The mode.
4. Geol. The theoretical standard of chemical composition of igneous rocks, expressed in terms of oxides: distinguished from mode. [<L norma rule]
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