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breastbone

American  
[brest-bohn] / ˈbrɛstˌboʊn /

noun

  1. the sternum.


breastbone British  
/ ˈbrɛstˌbəʊn /

noun

  1. 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

breastbone Scientific  
/ brĕst′bōn′ /
  1. See sternum


Etymology

Origin of breastbone

before 1000; Middle English brust-bon, Old English brēostbān. See breast, bone ( def. )


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Other options include a “J-incision aortic valve replacement” that he developed involving an incision of about 3 inches in the breastbone.

From The Wall Street Journal ● Apr. 25, 2026

Front seat passengers such as Jenna often have chest, rib and breastbone injuries if wearing a seat belt because of the massive pressure from the impact.

From BBC ● Feb. 14, 2026

One evening, mid-dream, Merrell threw himself into a corner of a nightstand, breaking his skin but narrowly missing his breastbone.

From Scientific American ● Jan. 24, 2023

He later developed chronic obstructive pulmonary disease, hypertension, diabetes, severe arthrosis and costochondral junction syndrome — a painful inflammation where the ribs meet the breastbone.

From Seattle Times ● Jan. 7, 2022

Shakily, he daubed circles on his heels, breastbone and forehead, As he finished the one on his forehead, he shut his eyes.

From "Wolf Brother" by Michelle Paver

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