cusp
/kʌsp/noun
1
- a pointed end where two curves meet, in particular尖头, 尖端, 尤指：
1.1
- Architecture a projecting point between small arcs in Gothic tracery【建筑】哥特式窗花格尖头（叶形饰的）尖头, 三角尖顶。
1.2
- a cone-shaped prominence on the surface of a tooth, especially of a molar or premolar（臼齿或前臼齿的）牙尖。
1.3
- Anatomy a pocket or fold in the wall of the heart or a major blood vessel that fills and distends if the blood flows backwards, so forming part of a valve【剖】（心瓣膜的）尖瓣。
1.4
- Mathematics a point at which the direction of a curve is abruptly reversed【数】尖点, 歧点, 会切点。
1.5
- each of the pointed ends of a crescent, especially of the moon月角。
2
- Astrology the initial point of an astrological sign or house【占星】天宫入口, 黄道记号尖端：
he was Aries on the cusp with Taurus.
他属白羊宫, 在金牛宫入口处。
2.1
- figurative a point between two different situations or states, when a person or thing is poised between the two or just about to move from one to the other〈喻〉过渡期, 过渡点：
those on the cusp of adulthood.
即将成年的那些人。
派生词
cuspate
adjectivecusped
adjectivecuspidate
adjective词源
late 16th cent. (in sense 2)： from Latin cuspis 'point or apex'.