from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Surgery in which the thoracic cavity is opened to expose the heart and the blood is recirculated and oxygenated by a heart-lung machine.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun heart surgery in which the rib cage is spread open, the heart is stopped and blood is detoured through a heart-lung machine while a heart valve or coronary artery is surgically repaired
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