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aortic ostium

aortic ostium in Medicine

aortic ostium n.
The opening from the left ventricle of the heart into the ascending aorta, guarded by the aortic valve.

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