DictionarycuspTransition point
noun

cusp

KUSP/kʌsp/

A point of transition between two states or periods.

The clocks show the cusp between one year and the next.

Two clocks display23:59DEC31 and00:00JAN1.
Etymology

A physical point or pointed end broadened into a figurative point where one state changes to another.

More examples

  • The company stands on the cusp of a breakthrough.
  • She is on the cusp of adulthood.

Forms

cusp

Similar words

threshold
Emphasizes the beginning of a new state.
turning point
Suggests a consequential change in direction.