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[bruhk-siz-uh m] /ˈbrʌk sɪz əm/
noun, Pathology
Origin of bruxism
1935-40; < Greek *brȳx(is) a gnashing of teeth (brȳ́k(ein) to gnash, bite + -sis -sis) + -ism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for bruxism
  • The cause of bruxism is not completely agreed upon, but daily stress may be the trigger in many people.
  • It's called sleep bruxism, and it refers to the grinding or clenching of teeth.
  • Many explanations have been offered for why night bruxism occurs and who is at risk, without conclusive proof.
  • A-The medical name for grinding, gnashing or clenching teeth tightly during sleep is bruxism.
British Dictionary definitions for bruxism


the habit of grinding the teeth, esp unconsciously
Word Origin
irregularly formed from Greek brykein to gnash the teeth + -ism
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 bruxism

"grinding the teeth unconsciously," from Greek ebryxa, aorist root of brykein "to gnash the teeth."

Online Etymology Dictionary, © 2010 Douglas Harper
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bruxism in Medicine

bruxism brux·ism (brŭk'sĭz'əm)
The habitual involuntary grinding or clenching of the teeth, usually during sleep, as from anger, tension, fear, or frustration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bruxism in Science
The habitual, involuntary grinding or clenching of the teeth, usually during sleep and sometimes associated wth stress.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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