tricuspid

(trī-kŭs'pĭd)
n.
An organ or part, especially a tooth, having three cusps.

adj. also tri·cus·pi·dal (-pĭ-dəl) or tri·cus·pi·date (-pĭ-dāt')

1. Having three cusps, especially a molar tooth.
2. Of or relating to the tricuspid valve.

[From Latin tricuspis, tricuspid-, having three points : tri-, tri- + cuspis, point.]

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(trī-kŭs'pĭd)
n.

An organ or a part, especially a tooth, having three cusps.

adj. or tri·cus·pi·dal (-pĭ-dəl) or tri·cus·pi·date (-pĭ-dāt')

1. Having three points, prongs, or cusps.
2. Of or relating to the tricuspid valve.

Having three points or cusps, as a valve of the heart.

• t. dysplasia — a congenital defect of the tricuspid heart valve commonest in cats. There is a variety of forms of the defect which causes enlargement of the right atrium and ventricle. See also ebstein's anomaly.
• t. insufficiency — a functional incompetence that may be caused by rupture of the chordae tendineae of the tricuspid valve, bacterial endocarditis, heartworms, endocardiosis or congenital anomalies, resulting in regurgitation of blood from the right ventricle into the right atrium during systole.
• t. regurgitation — see tricuspid insufficiency (above).
• t. valve — the valve located between the right atrium and right ventricle. Called also right atrioventricular valve.