| 单词 | cusp |
| 释义 | cusp (once / 11365 pages) 1n 2n 3n A cusp in geometry is the point where two curves meet. It's a kind of transition. If you're on the cusp of manhood, you’re not quite grown up, but you’re definitely not a little boy anymore either. The word comes from Latin cuspis, "point." You'll see lots of cusps in Gothic churches — a point where two arches meet, or where decorative curves meet to form a point. The little points that stick out on the surface of your teeth that are flat on top — the ones you use for grinding — are also called cusps. Those teeth right behind your canine teeth but before your molars have two cusps, and they're called bicuspids. WORD FAMILYcusp: cusps USAGE EXAMPLESEven the diary bits are not very revealing, being the moody musings, including poetry, of a young woman on the cusp of 20 years old. Washington Times(Dec 28, 2016) And then there is Kasia Galdyn, from Poland, who is on the cusp of cooking her first Christmas dinner in the UK. BBC(Dec 23, 2016) “We are on the cusp of a revolution,” Mark Fields, Ford’s chief executive, said at the Los Angeles Auto Show in November. New York Times(Dec 22, 2016) 1 n point formed by two intersecting arcs (as from the intrados of a Gothic arch) 2Hyper point sharp end n a thin triangular flap of a heart valve 3Syn|Hyper leaflet flap a movable piece of tissue partly connected to the body n small elevation on the grinding surface of a tooth Hyper peak, point, tip a V shape |
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