| 单词 | cusp |
| 释义 | cusp —cuspal, adj. /kusp/, n. 1. a point or pointed end. 2. Anat. , Zool. , Bot. a point, projection, or elevation, as on the crown of a tooth. 3. Also called spinode. Geom. a point where two branches of a curve meet, end, and are tangent. 4. Archit. a decorative device, used esp. in Gothic architecture to vary the outlines of intradoses or to form architectural foils, consisting of a pair of curves tangent to the real or imaginary line defining the area decorated and meeting at a point within the area. 5. Astron. a point of a crescent, esp. of the moon. 6. Astrol. a. the zodiacal degree that marks the beginning of a house or a sign. b. Informal. a person born on the first day of a sign. 7. a point that marks the beginning of a change: on the cusp of a new era. [1575-85; < L cuspis a point] |
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