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
Reliever Jake Sparger (5-1) pitched two-thirds of an inning for the win that put the Cardinals on the cusp of clinching the regional.
On the cusp of the third trial in the Dalia Dippolito murder-for-hire case, attorney's spent the day hammering out whether defense witness testimony on deception detection and battered woman's syndrome could be heard by the jury.
Now Pujols is at the cusp of joining Rodriguez and seven other major leaguers with 600 home runs.
Nixon was concerned that Johnson was on the cusp of a major breakthrough in the Paris peace talks that would bring an end to the war.
The Bowie State University senior, on the cusp of graduation, had just received his commission into the U.S. Army as lieutenant (never an easy feat).
Instead, the Penguins are on the cusp of joining some elite company.
A trio of small businesses in Charlotte tell their Obamacare stories: Government dictates In 2013, at the cusp of the employer mandate, Henderson Properties was just below the 50-employee threshold and considering a hiring freeze to stay there.
But just this August, on the cusp of Windows 8.1’s release, the company fixed the error: Steve Ballmer, Microsoft’s longtime CEO, is now on his way out too.
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: 1585
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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