Semilunar /(?)/

Sem·i·lu·nar

Semilunar

a.
  1. Shaped like a half moon.

Phrases & Compounds
Semilunar bone
a bone of the carpus; the lunar. See Lunar, n.
Semilunar valves
the valves at the beginning of the aorta and of the pulmonary artery which prevent the blood from flowing back into the ventricle.

Semilunar

n.
  1. The semilunar bone. (Anat.)