aortic valve

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.

n.

1. The valve between the left ventricle of the heart and the ascending aorta, consisting of three semilunar cusps.

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