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Word of the Day
Wednesday, December 11, 2013

Definitions for cusp

  1. a point or pointed end.
  2. Anatomy, Zoology, Botany. a point, projection, or elevation, as on the crown of a tooth.
  3. Also called spinode. Geometry. a point where two branches of a curve meet, end, and are tangent.

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Citations for cusp
From behind the cusp a figure had stepped out, entirely black, unfolding slowly, as though from a crouch. David Herter, Ceres Storm, 2000
"I have put your father into it! There are the initial letters W. C. let into the cusp of the York rose, and the date, three years before the battle of Bosworth, over the chimneypiece." Baron Edward Bulwer-Lytton, The Caxtons: A Family Picture, 1849
Origin of cusp
Cusp came to English in the late 1500s from the Latin cuspis meaning "a point."