aortic valve

American  

noun

Anatomy.

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.

---

aortic valve Scientific  

/ ā-ôr′tĭk /

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

---

Example Sentences

It is a riskier operation than putting in a surgical aortic valve replacement, though the risk has come down in recent years as surgeons have gained more experience.

From The Wall Street Journal • Apr. 25, 2026

The procedure treats a condition in which the heart’s aortic valve narrows due to calcium buildup, making it harder to pump blood.

From The Wall Street Journal • Apr. 24, 2026

It is a riskier operation than regular surgical aortic valve replacement.

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 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)