(anatomy) The semilunar valve of the heart that lies between the right ventricle and the pulmonary artery.

plural of pulmonary valve

(anatomy) The semilunar valve of the heart that lies between the left ventricle and the aorta.

plural of aortic valve

(anatomy) A semicircular fold of the lining membrane of the right atrium, situated at the ostium of the coronary sinus.

plural of return valve

A valve that opens to allow reflux of a fluid in case of overflow.

plural of slide valve

A valve in a steam engine, designed to slide back and forth to cover and uncover the openings through which steam enters the cylinder.

plural of Thebesian valve