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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Edwards’ focus is cardiac catheters and TAVR, or transcatheter aortic valve replacement.

From Barron's • Jan. 23, 2026

The surgery was approved by the hospital solely for use in children and young adults, the BBC understands, though Ms Booth had permission to offer the procedure for patients with aortic valve disease.

From BBC • Oct. 2, 2025

It causes a narrowing of the aortic valve, restricting blood flow out of the heart.

From Science Daily • Nov. 27, 2024

The symptoms are increased tension, which means, sooner or later, hypertrophy of the left ventricle and an accentuated closure of 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