Cusp meaning

kŭsp
(figuratively) An important moment when a decision is made that will determine future events.
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(mathematics) A point at which a curve crosses itself and at which the two tangents to the curve coincide.
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The boundary between two astrological signs or Zodiacal constellations.
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The definition of a cusp is a point, peak or tip.

An example of a cusp is the top of a hill.

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A point or pointed end.
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(architecture) The point of intersection of two ornamental arcs or curves, such as the inner points of a trefoil.
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(astronomy) Either point of a crescent moon.
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A point or pointed end; apex; peak.
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(archit.) A projecting point where two arcs meet, as in the internal curve of an arc.
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(astrol.) The transitional part of a sign or house.
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(astron.) Either horn of a crescent, as of the moon.
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(geom.) The tip of a pointed curve.
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A pointed or rounded projection on the chewing surface of a tooth.
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A triangular fold or flap of a heart valve.
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(geometry) A point of a curve where the curve is continuous but has no derivative, but such that it has a derivative at every nearby point.
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(architecture) A point made by the intersection of two curved lines or curved structures. A common motif in Gothic architecture.
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(astrology) A boundary between zodiacal signs and houses.
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A sharp point or pointed end.
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(dentistry) Any of the pointed parts of a canine tooth or molar.
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on the cusp
  • On the threshold or verge of a development or action:
    An actor on the cusp of becoming a star.
  • At the dividing line or border of two conditions or categories:
    An artist on the cusp between Victorianism and modernism.
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on the cusp
  • at or during a cusp
  • at or during a time of transition, as the moment of or just before a major change or event
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Idioms and Phrasal Verbs

Origin of cusp

  • Latin cuspis point

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin cuspis (“a point, spear, pointed end”); first used in astrology.

    From Wiktionary