English Dictionary: valves | by the DICT Development Group |
1 result for valves | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Semilunar \Sem`i*lu"nar\, a. Shaped like a half moon. {Semilunar bone} (Anat.), a bone of the carpus; the lunar. See {Lunar}, n. {Semilunar}, [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. |