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semilunar valve
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noun Anatomy.
either of two valves, one in the aorta and one in the pulmonary artery, consisting of a set of three crescent-shaped flaps of tissue and serving to prevent blood from flowing back into the heart after contraction.
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Compare aortic valve, pulmonary valve.
Origin of semilunar valve
First recorded in 1710–20
Words nearby semilunar valve
semiliterate, Sémillon, semilogarithmic, semilunar, semilunar bone, semilunar valve, semimajor axis, semimatte, semimicroanalysis, semiminor axis, semimonthly
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use semilunar valve in a sentence
British Dictionary definitions for semilunar valve
semilunar valve
noun
anatomy either of two crescent-shaped valves, one in the aorta and one in the pulmonary artery, that prevent regurgitation of blood into the heart
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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