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[em-brey-zher] /ɛmˈbreɪ ʒər/
(in fortification) an opening, as a loophole or crenel, through which missiles may be discharged.
Architecture. a splayed enlargement of a door or window toward the inner face of a wall.
Dentistry. the space between adjacent teeth.
Origin of embrasure
1695-1705; < French, equivalent to embras(er) to enlarge a window or door opening, make an embrasure (apparently the same v. as embraser to set on fire (see embrace2), though sense shift unclear) + -ure -ure
Related forms
embrasured, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for embrasure
  • Two gun embrasures and one howitzer embrasure were closed later on to make room for a torpedo casemate.
  • One emplacement is earthen, while the other two are small reinforced-concrete structures with one embrasure each.
  • In this apartment an embrasure opened out over the ditch, or moat.
British Dictionary definitions for embrasure


(fortifications) an opening or indentation, as in a battlement, for shooting through
an opening forming a door or window, having splayed sides that increase the width of the opening in the interior
Derived Forms
embrasured, adjective
Word Origin
C18: from French, from obsolete embraser to widen, of uncertain origin
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 embrasure

1702, from French embrasure (16c.), from Old French embraser "to cut at a slant, make a groove or furrow in a door or window," from en- "in" (see en- (1)) + braser "to cut at a slant."

Online Etymology Dictionary, © 2010 Douglas Harper
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embrasure in Medicine

embrasure em·bra·sure (ěm-brā'zhər)
The sloped valley between two 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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