YourDictionary

cusp

noun

  1. a point or pointed end; apex; peak
  2. Anat.
    1. any of the elevations on the chewing surface of a tooth
    2. any of the triangular flaps of a heart valve
  3. Archit. a projecting point where two arcs meet, as in the internal curve of an arc
  4. Astrol. the transitional part of a sign or house
  5. Astron. either horn of a crescent, as of the moon
  6. Geom. the tip of a pointed curve

See cusp in American Heritage Dictionary 4

Learn more about cusp

link/cite print suggestion box