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coronary sinus

noun, Anatomy.
a large venous channel in the heart wall that receives blood via the coronary veins and empties into the right atrium.
Origin of coronary sinus
1825-35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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coronary-sinus in Medicine

coronary sinus n.
A short trunk receiving most of the veins of the heart, running in the posterior part of the coronary sulcus and emptying into the right atrium between the inferior vena cava and the atrioventricular orifice.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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