Definitions for "Semilunar"
Shaped like a half moon.
resembling the new moon in shape
A term used to indicate the "half-moon" shape of a single valve leaflet. The aortic valve is the classic semilunar valve, with 3 separate "half-moon"shaped leaflets attached to the fibrous annulus. The pulmonary valve is of the same configuration.
Keywords:  bone
The semilunar bone.