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open-heart surgery

[oh-puh n-hahrt]
noun
  1. surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
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Origin of open-heart surgery

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for open-heart surgery

open-heart surgery

noun
  1. surgical repair of the heart during which the blood circulation is often maintained mechanically
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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

open-heart surgery in Science

open-heart surgery

  1. Surgery in which the thoracic cavity is opened to expose the heart and the blood is recirculated and oxygenated by a heart-lung machine.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.