Tricuspid
Pronunciation : Tri*cus"pid
Part of Speech : a.
Etymology : [L. tricuspis, -idis; tri- (see Tri-) + cuspis a point: cf. F. tricuspide.]
Definition : 1. Having three cusps, or points; tricuspidate; as, a tricuspid molar.
2. (Anat.)
Defn: Of or pertaining to the tricuspid valves; as, tricuspid obstruction. 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.
Source : Webster's Unabridged Dictionary, 1913