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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. 2018.
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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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