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[brest-bohn] /ˈbrɛstˌboʊn/
the sternum.
Origin of breastbone
before 1000; Middle English brust-bon, Old English brēostbān. See breast, bone1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for breastbone
  • It stretches from the bottom of the breastbone to the belly button, and increases with muscle straining.
  • Or the cancer may have spread to lymph nodes behind the breastbone.
  • Persistent pain from the breastbone cut is unlikely but possible.
  • The breastbone is attached to the collarbone and the first seven ribs.
  • The first cut through the breastbone will avoid damage to the internal organs.
  • They include the bones of the head, vertebral column, ribs and breastbone or sternum.
  • Mckinley was hit in the breastbone and stomach eight days later, he died.
British Dictionary definitions for breastbone


the nontechnical name for sternum
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 breastbone

"sternum," Old English breostban; see breast (n.) + bone (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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breastbone in Medicine

breastbone breast·bone (brěst'bōn')
See sternum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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breastbone in Science
See sternum.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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