TRICROTISM
Tri"cro*tism, n. (Physiol.)
Defn: That condition of the arterial pulse in which there is a triple beat. The pulse curve obtained in the sphygmographic tracing characteristic of tricrotism shows two secondary crests in addition to the primary.
TRICROTOUS
Tri"cro*tous, a. (Physiol.)
Defn: Tricrotic.
TRICURVATE
Tri*cur"vate, a. Etym: [Pref. tri- + curvate.] (Zoöl.)
Defn: Curved in three directions; as, a tricurvate spicule (see
Illust. of Spicule).
TRICUSPID Tri*cus"pid, a. Etym: [L. tricuspis, -idis; tri- (see Tri-) + cuspis a point: cf. F. tricuspide.]
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.