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[uh-trish-uh n] /əˈtrɪʃ ən/
a reduction or decrease in numbers, size, or strength:
Our club has had a high rate of attrition because so many members have moved away.
a wearing down or weakening of resistance, especially as a result of continuous pressure or harassment:
The enemy surrounded the town and conducted a war of attrition.
a gradual reduction in work force without firing of personnel, as when workers resign or retire and are not replaced.
the act of rubbing against something; friction.
a wearing down or away by friction; abrasion.
Theology. imperfect contrition.
See under contrition (def 2).
Origin of attrition
1325-75; Middle English < Latin attrītiōn- (stem of attrītiō) friction. See attrite, -ion
Related forms
attritional, adjective
[uh-trahy-tiv] /əˈtraɪ tɪv/ (Show IPA),
interattrition, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for attrition
  • The end result is a horrible attrition rate.
  • Through attrition they have cut their staff in half, which also helped lower costs.
  • He would like to reduce the attrition.
  • Every zombie war is a war of attrition.
  • The 1000 jobs lost were eliminated through attrition, vacancies and transfers.
  • The attrition rate, I was once told, was around 40 percent.
  • Happiness is to be free of the attrition of doubt.
  • Maybe that's why attrition was so high in his time.
  • The Army has also slashed the rate of attrition for new soldiers.
  • At the top of the civil service the attrition rate will be even higher.
British Dictionary definitions for attrition


the act of wearing away or the state of being worn away, as by friction
constant wearing down to weaken or destroy (often in the phrase war of attrition)
Also called natural wastage. a decrease in the size of the workforce of an organization achieved by not replacing employees who retire or resign
(geography) the grinding down of rock particles by friction during transportation by water, wind, or ice Compare abrasion (sense 3), corrasion
(theol) sorrow for sin arising from fear of damnation, esp as contrasted with contrition, which arises purely from love of God
Derived Forms
attritional, adjective
attritive (əˈtraɪtɪv) adjective
Word Origin
C14: from Late Latin attrītiō a rubbing against something, from Latin atterere to weaken, from terere to rub
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
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Word Origin and History for attrition

1540s, "abrasion, a scraping," from Latin attritionem (nominative attritio), literally "a rubbing against," noun of action from past participle stem of atterere "to wear, rub away," figuratively "to destroy, waste," from ad- "to" (see ad-) + terere "to rub" (see throw (v.)). The earliest sense in English is from Scholastic theology (late 14c.), "sorrow for sin merely out of fear of punishment," a minor irritation, and thus less than contrition. The sense of "wearing down of military strength" is a World War I coinage (1914). Figurative use by 1930.

Online Etymology Dictionary, © 2010 Douglas Harper
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attrition in Medicine

attrition at·tri·tion (ə-trĭsh'ən)
A wearing away by friction or rubbing, such as the loss of tooth structure caused by abrasive foods or grinding of the teeth.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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