Meaning of aortic valve

aor'tic valve'

Pronunciation: [key]
— Anat. Anat.
  1. a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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