cusp

cusp
[kʌsp]
noun
  1. a pointed end where two curves meet, in particular
    尖头，尖端，尤指
    ■(Architecture)a projecting point between small arcs in Gothic tracery
    (建筑)哥特式窗花格尖头
    ■a cone-shaped prominence on the surface of a tooth, especially of a molar or premolar
    （臼齿或前臼齿）牙尖
    ■(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)尖瓣
    ■(Mathematics)a point at which the direction of a curve is abruptly reversed
    (数)尖点，歧点
    ■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。
    ■(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.
    刚成年的那些人。
派生
cuspate
adjective
cusped
adjective
cuspidate
adjective
语源
  1. late 16th cent. (in sense 2): from Latin cuspis 'point or apex'
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