Now in man it is only the first of these three teeth which normally presents five cusps, both the others presenting only four.
Tricuspidate: ending in three points: with three cusps or teeth.
The head of each light of the north window has two cusps on each side.
Quatrefoils are made by arranging four cusps within a circle.
In the diagram before us all the cusps have been touched by the true Arctick pole of the terrella.
Fulgur has a median tooth with three cusps; Buccinum one with six.
The aortic valve has the same structure as the pulmonary, though the cusps are more massive.
At 12.43, the cusps, for a few moments, bore a very black aspect.
In the head of the largest arch is a cinquefoil opening ornamented with cusps and dog-tooth moulding.
In Fig. 79, where every tooth is present, a most remarkable display of cusps occurs.
1580s, from Latin cuspis "point, spear, pointed end, head," of unknown origin. Astrological use is earliest.
A pointed or rounded projection on the chewing surface of a tooth.
A triangular fold or flap of a heart valve.