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

Farming techniques have changed for 10,000 years, and they're on the cusp of major changes now.

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

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 tangent.

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.

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 branches of a …