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rigor

[rig-er]
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noun
  1. strictness, severity, or harshness, as in dealing with people.
  2. the full or extreme severity of laws, rules, etc.
  3. severity of living conditions; hardship; austerity: the rigor of wartime existence.
  4. a severe or harsh act, circumstance, etc.
  5. scrupulous or inflexible accuracy or adherence: the logical rigor of mathematics.
  6. severity of weather or climate or an instance of this: the rigors of winter.
  7. Pathology. a sudden coldness, as that preceding certain fevers; chill.
  8. Physiology. a state of rigidity in muscle tissues during which they are unable to respond to stimuli due to the coagulation of muscle protein.
  9. Obsolete. stiffness or rigidity.
Also especially British, rig·our.

Origin of rigor

1350–1400; Middle English rigour < Latin rigor stiffness, equivalent to rig(ēre) to be stiff + -or -or1

Synonyms

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1. inflexibility, stringency. 4. cruelty.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rigor

Contemporary Examples

Historical Examples

  • Then I am full of regret for you, because—because I know the rigor of police discipline.

    The Law-Breakers

    Ridgwell Cullum

  • It was judged not proper for me to return, considering the rigor of the season.

    The Autobiography of Madame Guyon

    Jeanne Marie Bouvier de La Motte Guyon

  • It is like an iron country, and the spirit is oppressed by its rigor and melancholy.

    O Pioneers!

    Willa Cather

  • The other patient was seized with a rigor the third morning after delivery.

    Medical Essays

    Oliver Wendell Holmes, Sr.

  • The mine owner did not speak, but the rigor of his eyes did not relax.

    Brand Blotters

    William MacLeod Raine


British Dictionary definitions for rigor

rigor

noun
  1. med a sudden feeling of chilliness, often accompanied by shivering: it sometimes precedes a fever
  2. (ˈrɪɡə) pathol rigidity of a muscle; muscular cramp
  3. a state of rigidity assumed by some animals in reaction to sudden shock
  4. the inertia assumed by some plants in conditions unfavourable to growth

Word Origin

see rigour
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 rigor

n.

late 14c., from Old French rigor "strength, hardness" (13c., Modern French rigueur), from Latin rigorem (nominative rigor) "numbness, stiffness, hardness, firmness; roughness, rudeness," from rigere "be stiff" (see rigid).

Online Etymology Dictionary, © 2010 Douglas Harper

rigor in Medicine

rigor

(rĭgər)
n.
  1. rigidity
  2. Shivering or trembling, as caused by a chill.
  3. A state of rigidity in living tissues or organs that prevents response to stimuli.