- a point or pointed end.
- Anatomy, Zoology, Botany. a point, projection, or elevation, as on the crown of a tooth.
- Also called spinode. Geometry. a point where two branches of a curve meet, end, and are tangent.
- Architecture. a decorative device, used especially in Gothic architecture to vary the outlines of intradoses or to form architectural foils, consisting of a pair of curves tangent to the real or imaginary line defining the area decorated and meeting at a point within the area.
- Astronomy. a point of a crescent, especially of the moon.
- the zodiacal degree that marks the beginning of a house or a sign.
- Informal.a person born on the first day of a sign.
- a point that marks the beginning of a change: on the cusp of a new era.
Origin of cusp
Examples from the Web for cusp
The novel is a near perfect portrayal of the emotions of a young girl on the cusp of womanhood.These Female Contemporaries Weren’t Afraid of Virginia Woolf
November 20, 2014
France, and indeed Europe, was on the cusp of a new kind of living where governments needed to be efficient.Napoleon Was a Dynamite Dictator
November 7, 2014
As the Daily Beast reported earlier this week, Pippa Middleton is on the cusp of signing a deal to be a special reporter for NBC.Pippa Middleton's Country Dancing NBC Try Out
November 7, 2014
These new cases, both real and merely suspected, are coming right as we approach the cusp of influenza season.Parents’ Ebola Panic Is Taking Over My Clinic
October 15, 2014
“I always read him as an older kind of a guy on the cusp of finishing school and finding a job,” he said.Why 'The Giver' Movie Will Disappoint the Book's Fans
August 15, 2014
Cusp -is: a pointed process; sometimes at the margin of a wing.Explanation of Terms Used in Entomology
John. B. Smith
When the sun is passing from one sign to another, the period is known as a cusp.
There is symmetry about the initial line and a cusp at the origin.
The stealthy boat crept on till midnight; now and then from the cusp of a bay floated out the faint cry of a quail.The Unknown Sea
The ornaments of the cusp might thus be worked without any troublesome reference to the rest of the arch.The Stones of Venice, Volume I (of 3)
- any of the small elevations on the grinding or chewing surface of a tooth
- any of the triangular flaps of a heart valve
- a point or pointed end
- Also called: spinode geometry a point at which two arcs of a curve intersect and at which the two tangents are coincident
- architect a carving at the meeting place of two arcs
- astronomy either of the points of a crescent moon or of a satellite or inferior planet in a similar phase
- astrology any division between houses or signs of the zodiac
Word Origin and History for cusp
1580s, from Latin cuspis "point, spear, pointed end, head," of unknown origin. Astrological use is earliest.
- A pointed or rounded projection on the chewing surface of a tooth.
- A triangular fold or flap of a heart valve.