cusp

play
noun \ˈkəsp\

Definition of cusp

  1. :  point, apex: such asa :  a point of transition (as from one historical period to the next) :  turning point; also :  edge, verge <on the cusp of stardom> < … you're on the cusp between heat exhaustion and life-threatening heatstroke. — Mark Jannot>b :  either horn of a crescent moonc :  a fixed point on a mathematical curve at which a point tracing the curve would exactly reverse its direction of motiond :  an ornamental pointed projection formed by or arising from the intersection of two arcs or foils (see 3foil 4)e (1) :  a point on the grinding surface of a tooth (2) :  a fold or flap of a cardiac valve

cuspate

play \ˈkəs-ˌpāt, -pət\ adjective

cusped

play \ˈkəspt\ adjective

Examples of cusp in a sentence

  1. the cusp of a tooth

  2. <medical researchers who are on the cusp of a major breakthrough>

Origin and Etymology of cusp

Latin cuspis point


First Known Use: 1585



CUSP Defined for English Language Learners

cusp

play
noun \ˈkəsp\

Definition of cusp for English Language Learners

  • : a pointed end or part where two curves meet


CUSP Defined for Kids

cusp

play
noun \ˈkəsp\

Definition of cusp for Students

  1. :  a point or pointed end <the cusp of a tooth>


Medical Dictionary

cusp

play
noun \ˈkəsp\

Medical Definition of cusp

  1. 1:  a point on the grinding surface of a tooth

  2. 2:  a fold or flap of a cardiac valve

cuspal

\ˈkəs-pəl\play adjective


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