cusp

noun
\ ˈkəsp How to pronounce cusp (audio) \

Definition of cusp

: point, apex: such as
a : 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 moon
c : a fixed point on a mathematical curve at which a point tracing the curve would exactly reverse its direction of motion
d : an ornamental pointed projection formed by or arising from the intersection of two arcs or foils (see foil entry 2 sense 4)
e(1) : a point on the grinding surface of a tooth
(2) : a fold or flap of a cardiac valve

Illustration of cusp

Illustration of cusp

1 cusp d

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Other Words from cusp

cuspate \ ˈkə-​ˌspāt How to pronounce cuspate (audio) , -​spət \ adjective
cusped \ ˈkəspt How to pronounce cusped (audio) \ 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 on the Web

The Nasdaq Composite is on the cusp of exiting a bear market, rebounding nearly 20% from its Christmas Eve low and highlighting the resilience of the technology shares that have long powered the market higher. WSJ, "Tech Rally Puts Nasdaq on Cusp of Exiting Bear Market," 6 Feb. 2019 Yet for many, the flush of that victory has given way to the realization that Baghdad, once a jewel among Arab capitals and now on the cusp of achieving megacity status, is barely functional. Nabih Bulos, The Seattle Times, "Baghdad, once a jewel among Arab capitals, is barely functional," 28 Jan. 2019 Now, the eccentric style maven is on the cusp of entering the mainstream. Liana Satenstein, Vogue, "Kerwin Frost, Fashion’s Funniest Man, Has Serious Street Style," 18 Jan. 2019 The outlook for Sirius looks encouraging, with the company on the cusp of drilling after several years of delays. WSJ, "European Equities Market Talk Roundup," 15 Jan. 2019 After years of radical invention, aerospace design, political feuding, and faith in ingenuity—and eight years since the shuttle retirement—the United States is on the cusp of recapturing the ability to reach space from U.S. soil. Joe Pappalardo, Popular Mechanics, "America Is About to Take Back Human Spaceflight, and It's a Lot More Than Just Flag-Waving," 4 Jan. 2019 Whoever gets the job will inherit a roster on the cusp of significant change. Joe Kay, The Seattle Times, "Next Bengals coach inherits roster ready for big change," 1 Jan. 2019 Chinese architecture firm Open designed the unorthodox museum on the cusp of the sea, where its white facade is wedged into the sand like a series of giant seashells. Liz Stinson, Curbed, "Otherworldly new museum is built into a sand dune," 17 Dec. 2018 The series is best when Jamie and Claire are in Scotland, but season four may bring back some of that ruggedness in a new world on the cusp of revolution. Wendy Naugle, Glamour, "Outlander's Sex Scenes Are More Than Hot—They're Genuinely Feminist," 7 Dec. 2018

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.

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First Known Use of cusp

1585, in the meaning defined above

History and Etymology for cusp

Latin cuspis point

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Statistics for cusp

Last Updated

19 Feb 2019

Look-up Popularity

Time Traveler for cusp

The first known use of cusp was in 1585

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More Definitions for cusp

cusp

noun

English Language Learners Definition of cusp

technical : a pointed end or part where two curves meet

cusp

noun
\ ˈkəsp How to pronounce cusp (audio) \

Kids Definition of cusp

: a point or pointed end the cusp of a tooth

cusp

noun
\ ˈkəsp How to pronounce cusp (audio) \

Medical Definition of cusp

1 : a point on the grinding surface of a tooth
2 : a fold or flap of a cardiac valve

Other Words from cusp

cuspal \ ˈkəs-​pəl How to pronounce cuspal (audio) \ adjective

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More from Merriam-Webster on cusp

Thesaurus: All synonyms and antonyms for cusp

Spanish Central: Translation of cusp

Nglish: Translation of cusp for Spanish Speakers

Britannica.com: Encyclopedia article about cusp

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