aortic valve

American

noun

Anatomy.

a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.

aortic valve Scientific

/ ā-ôr′tĭk /

A valve located in the aorta that prevents the backflow of blood to the left ventricle.

Example Sentences

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Big-words alert: Edwards Lifesciences is expanding beyond its monopoly in TAVR, or transcatheter aortic valve replacement, into fast-growing TMTT, or transcatheter mitral and tricuspid therapies.

From Barron's • Jun. 5, 2026

The procedure is designed to treat severe aortic stenosis, in which calcium buildup narrows the opening of the aortic valve.

From The Wall Street Journal • Apr. 24, 2026

That first procedure was called a transcatheter aortic valve replacement, or TAVR.

From The Wall Street Journal • Apr. 24, 2026

Transcatheter aortic valve replacement, or TAVR, is gaining popularity as a simpler alternative to open heart surgery.

From The Wall Street Journal • Apr. 24, 2026

Heart strain may also be a cause of chronic endocarditis, especially at the aortic valve.

From Disturbances of the Heart by Osborne, Oliver T. (Oliver Thomas)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023