a : a point of transition (as from one historical period to the next) : turning point also : edge, verge on the cusp of stardom

What is a cusp? Most often, cusp is used figuratively to mean a turning point or a point that marks a new beginning, as in Jorge was on the cusp of a scientific breakthrough when his grant …

Decoherence on the coin only does not produce a top-hat distribution, instead the distribution develops a cusp as it passes from quantum to classical.

cusp (kʌsp) n. 1. a point or pointed end. 2. an anatomical point or prominence, as on the crown of a tooth or on a valve of the heart. 3. a point where two branches of a curve meet, end, and are …

Definition of cusp noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

cusp in American English (kʌsp ) noun Origin: L cuspis (gen. cuspidis), point, pointed end, spear

Nov 1, 2025 · cusp (third-person singular simple present cusps, present participle cusping, simple past and past participle cusped) (slang) To behave in a reckless or dangerous manner.

A cusp in geometry is the point where two curves meet. It's a kind of transition. If you're on the cusp of manhood, you’re not quite grown up, but you’re definitely not a little boy anymore either.

There are ten meanings listed in OED's entry for the noun cusp, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

cusp (kusp), n. a point or pointed end. Anatomy, Botany, Zoology a point, projection, or elevation, as on the crown of a tooth. Mathematics Also called spinode. [Geom.]a point where two …