Sem`i*lu"nar (?), a.
Shaped like a half moon.
Semilunar bone Anat., a bone of the carpus; the lunar. See Lunar, n. -- Semilunar, ∨ Sigmoid, valves Anat., the valves at the beginning of the aorta and of the pulmonary artery which prevent the blood from flowing back into the ventricle.
© Webster 1913.
Sem`i*lu"nar, n. Anat.
The semilunar bone.
© Webster 1913.