cusp
[kusp] a pointed or rounded projection, such as on the crown of a tooth, or a segment of a
cardiac valve. See also
valvula.
Carabelli cusp an accessory fifth cusp on the lingual surface of many maxillary first molars; it may be unilateral or bilateral and varies in size from person to person.
semilunar cusp any of the semilunar segments of the
aortic valve (having posterior, right, and left cusps) or the
pulmonary valve (having anterior, right, and left cusps).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
sem·i·lu·nar cusp
one of the three semilunar segments serving as the three cusps of a valve preventing regurgitation at the beginning of the aorta; a similar valve guards the entrance of the pulmonary trunk; the segments are named, respectively, anterior, right, and left in the pulmonary valve, and posterior, right, and left in the aortic valve.
Farlex Partner Medical Dictionary © Farlex 2012