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bruxism

[bruhk-siz-uh m]
noun Pathology.
  1. teeth grinding.
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Origin of bruxism

1935–40; < Greek *brȳx(is) a gnashing of teeth (brȳ́k(ein) to gnash, bite + -sis -sis) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for bruxism

bruxism

noun
  1. the habit of grinding the teeth, esp unconsciously
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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

Word Origin and History for bruxism

n.

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

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Online Etymology Dictionary, © 2010 Douglas Harper

bruxism in Medicine

bruxism

(brŭksĭz′əm)
n.
  1. The habitual involuntary grinding or clenching of the teeth, usually during sleep, as from anger, tension, fear, or frustration.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

bruxism in Science

bruxism

[brŭksĭz′əm]
  1. The habitual, involuntary grinding or clenching of the teeth, usually during sleep and sometimes associated wth stress.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.