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variance

[vair-ee-uh ns]
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noun
  1. the state, quality, or fact of being variable, divergent, different, or anomalous.
  2. an instance of varying; difference; discrepancy.
  3. Also called mean square deviation. Statistics. the square of the standard deviation.
  4. Physics, Chemistry. the number of degrees of freedom of a system.
  5. Law.
    1. a difference or discrepancy, as between two statements or documents in law that should agree.
    2. a departure from the cause of action originally stated in the complaint.
  6. an official permit to do something normally forbidden by regulations, especially by building in a way or for a purpose normally forbidden by a zoning law or a building code.
  7. a disagreement, dispute, or quarrel.
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Idioms
  1. at variance,
    1. (of things) in a state of difference or disagreement.
    2. (of persons) in a state of controversy or dissension: at variance with one's superiors.
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Origin of variance

1300–50; Middle English < Latin variantia, equivalent to vari(āre) to vary) + -antia -ance
Related formsnon·var·i·ance, nounself-var·i·ance, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for variance

Contemporary Examples

Historical Examples

  • We have exacted from him what is at variance with the fixed Chinese policy of ages.

  • She and his father had been at variance from his earliest remembrance.

    Little Dorrit

    Charles Dickens

  • I have reason to curse those interests; they are for ever at variance with mine.

  • He was in no hurry, however; he did not love her then, since he could be satisfied to live at variance with her.

    Doctor Pascal

    Emile Zola

  • She had gone to bed angry with Pascal; they were at variance with each other.

    Doctor Pascal

    Emile Zola


British Dictionary definitions for variance

variance

noun
  1. the act of varying or the quality, state, or degree of being divergent; discrepancy
  2. an instance of diverging; dissensionour variance on this matter should not affect our friendship
  3. at variance
    1. (often foll by with)(of facts, etc) not in accord; conflicting
    2. (of persons) in a state of dissension
  4. statistics a measure of dispersion obtained by taking the mean of the squared deviations of the observed values from their mean in a frequency distribution
  5. a difference or discrepancy between two steps in a legal proceeding, esp between a statement in a pleading and the evidence given to support it
  6. (in the US and Canada) a licence or authority issued by the board of variance to contravene the usual rule, esp to build contrary to the provision of a zoning code
  7. chem the number of degrees of freedom of a system, used in the phase rule
  8. accounting the difference between actual and standard costs of production
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for variance

n.

mid-14c., "fact of undergoing change," from Old French variance, from Latin variantia, from variare "to change" (see vary). Meaning "state of disagreement" is recorded from early 15c. The U.S. zoning sense of "official dispensation from a building regulation" is recorded from 1925.

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Online Etymology Dictionary, © 2010 Douglas Harper

variance in Medicine

variance

(vârē-əns, văr-)
n.
  1. The state or quality of being variant or variable; a variation.
  2. The state or fact of differing or of being in conflict.
  3. The square of the standard deviation.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.