Found 2 items, similar to semilunar valves.
English → English (WordNet)
Definition: semilunar valve
semilunar valve
n : a heart valve with half-moon-shaped cusps; prevents blood
from flowing back into the heart
English → English (gcide)
Definition: Semilunar valves
Semilunar
\Sem`i*lu"nar\, a.
Shaped like a half moon.
[1913 Webster]
Semilunar bone (Anat.), a bone of the carpus; the lunar.
See
Lunar, n.
Semilunar valves, or
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.
[1913 Webster]