(n) valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts, Syn.right atrioventricular valve
The Collaborative International Dictionary of English (GCIDE) v.0.53
a. [ L. tricuspis, -idis; tri- (see Tri-) + cuspis a point: cf. F. tricuspide. ] 1. Having three cusps, or points; tricuspidate; as, a tricuspid molar. [ 1913 Webster ]
2. (Anat.) Of or pertaining to the tricuspid valves; as, tricuspid obstruction. [ 1913 Webster ]
Tricuspid valve (Anat.), the valve, consisting of three triangular membranous flaps, at the opening of the right auricle into the right ventricle in the heart of most mammals; -- sometimes called the tricuspid valves, each flap being regarded as a valve. [ 1913 Webster ]
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