Definition of cusp
: 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 Jannotb : 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
cuspateplay \ˈkə-ˌspāt, -spət\ adjective
cuspedplay \ˈkəspt\ adjective
Examples of cusp in a Sentence
the cusp of a tooth
medical researchers who are on the cusp of a major breakthrough
Recent Examples of cusp from the Web
The spaceport opened on the cusp of a national recession.
Everyone else was ready, surgeons on the cusp of beginning an incredibly intricate procedure.
The U19s' rising sophomore on the cusp of stardom is Georgia Tech wing Josh Okogie.
On the cusp of beginning his college golf career, Brendan O'Reilly knew the Western Junior Championship would be a more than sufficient test for the next level.
This kid is on the cusp of becoming one of the best and most versatile big men in the league.
But if the GOP leaders are on the cusp of a vote, most senators aren't in the loop.
Most draft sites have him right on the cusp of, if not in, the first round.
On the cusp of being empty nesters, the couple slowly started dipping their toes back into winemaking after a 16-year hiatus.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cusp'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of cusp
Latin cuspis point
First Known Use: 1585See Words from the same year
CUSP Defined for English Language Learners
Definition of cusp for English Language Learners
: a pointed end or part where two curves meet
CUSP Defined for Kids
Definition of cusp for Students
: a point or pointed end the cusp of a tooth
Seen and Heard
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