cusp

Definitions

  • WordNet 3.6
    • n cusp point formed by two intersecting arcs (as from the intrados of a Gothic arch)
    • n cusp small elevation on the grinding surface of a tooth
    • n cusp a thin triangular flap of a heart valve
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Webster's Revised Unabridged Dictionary
    • Cusp (Math) A multiple point of a curve at which two or more branches of the curve have a common tangent.
    • Cusp (Anat) A prominence or point, especially on the crown of a tooth.
    • Cusp (Bot) A sharp and rigid point.
    • Cusp (Arch) A triangular protection from the intrados of an arch, or from an inner curve of tracery.
    • Cusp (Astrol) The beginning or first entrance of any house in the calculations of nativities, etc.
    • Cusp (Astron) The point or horn of the crescent moon or other crescent-shaped luminary.
    • v. t Cusp To furnish with a cusp or cusps.
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Century Dictionary and Cyclopedia
    • n cusp In astronomy, the point or horn of a crescent, specifically of the crescent moon.
    • n cusp In astrology, the beginning or first entrance of any house in the calculation of nativities.
    • n cusp In geometry, a stationary point on a curve, where a point describing the curve has its motion precisely reversed.
    • n cusp In architecture, an intersecting point of the small arcs or foliations decorating the internal curves of the trefoils, cinquefoils, etc., of medieval tracery; also, the figure formed by the intersection of such arcs.
    • n cusp In zoöl. and anatomy:
    • n cusp Any special prominence or protuberance of the crown of a tooth. A blunt conical cusp is called a tubercle; a sharp sectorial cusp is a blade; a low or lateral cusp is a heel. Teeth are sometimes named from the number of their cusps, as bicuspid, tricuspid. A canine tooth, the crown of which consists of a single cusp, is cuspidate.
    • n cusp A sharp tooth-like process on a margin or part.
    • n cusp In botany, a sharp and rigid point, as of a leaf.
    • n cusp One of the segments, with pointed tip, of a valve of the heart.
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Chambers's Twentieth Century Dictionary
    • n Cusp kusp a point: the point or horn of the moon, &c.:
    • n Cusp kusp (archit.) a small projecting ornament common in Gothic tracery
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Etymology

Webster's Revised Unabridged Dictionary
L. cuspis, -idis, point, pointed end
Chambers's Twentieth Century Dictionary
L. cuspis, cuspid-is, a point.

Usage

In literature:

On the north wall is a third, and in the south wall a piscina with two-cusped arch and projecting basin.
"Bell's Cathedrals: The Cathedral Church of Ripon" by Cecil Walter Charles Hallett
At noon the Sun is on the cusp of the tenth house.
"How to Read the Crystal" by Sepharial
Three fishes naiant (the arms of Yarmouth), within a bordure of six cusps.
"Notes and Queries, Number 203, September 17, 1853" by Various
The crown of the most anterior (or "first") molar of the upper jaw has four cusps, tubercles, or cones on it.
"More Science From an Easy Chair" by Sir E. Ray (Edwin Ray) Lankester
They are, however, so high that they blunt the southern cusp of the moon when it is in crescent form.
"To Mars via The Moon" by Mark Wicks
Ladder-stitch occurs in the cusped shapes framing certain flowers in Illustration 72, embroidered all in blue silk on linen.
"Art in Needlework" by Lewis F. Day
On the west side is a recess with shafts of Purbeck marble and foliated cusps.
"Bournemouth, Poole & Christchurch" by Sidney Heath
On the lower row are interlacing semicircles in high relief forming foliated cusps and painted blue.
"Portuguese Architecture" by Walter Crum Watson
The true and perfect cusp is single only.
"The Stones of Venice, Volume I (of 3)" by John Ruskin
Look if the arches are cusped, or apertures foliated.
"The Stones of Venice, Volume II (of 3)," by John Ruskin
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In poetry:

And pristine alphabets and cows that moo
And moo as they jump over moons as new
As that crisp cusp toward which you voyage now.
Hail and farewell. Hello, goodbye. O keeper
Of the profane grail, the dreaming skull.
"The Ghost's Leavetaking" by Sylvia Plath
A cusp still clasped him, a fluke yet fanged him, entangled him, not quite
utterly.
This was the prized, the desirable sight, unsought, presented so easily,
Parted me leaf and leaf, divided me, eyelid and eyelid of slumber.
"Moonrise" by Govinda Krishna Chettur

In news:

Reservist on cusp of living his dream as musician.
DALLAS — Neiman Marcus is looking to build on its Cusp brand with the help of a fashion blogger.
The company has launched a contest to find the perfect blogger that embodies the Cusp sensibility.
Nate Howell, 27 Cusp Dining & Drinks La Jolla, California.
On the cusp of succeeding where numerous past congresses and administrations have failed , jubilant ...
We are on the cusp of a language revitalization in Southeast Alaska.
On the cusp of the newest film about Abraham Lincoln the issue of secession has again raised its ugly head.
"We are at the cusp of huge changes around us in everything we look at", said analyst and futurist Mark Anderson at his annual predictions dinner Thursday night in New York.
On the cusp of greatness .
Cowboys' Dez Bryant can frustrate even on the cusp of greatness .
Cusp Trends Debut In Boca Raton.
Neiman Marcus recently debuted CUSP and celebrated their shop-in-shop with four local stylists.
Jerry York on cusp of hockey history.
I could be wrong, and a number of things must fall into place, but I think the hotel industry is on the cusp of another development spree.
As the NAACP embarks on its 100th anniversary, the organization and America stands on the cusp of a new era.
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In science:

For general cusped S Birman and Series have shown that the NS (L) grows at most polynomially as a function of L.
A norm on homology of surfaces and counting simple geodesics
Any punctured torus has a cusp region with bounding curve of length 4 − ǫ, and this bound is optimal.
A norm on homology of surfaces and counting simple geodesics
No simple closed geodesic intersects a cusp region with boundary curve of length 4 − ǫ.
A norm on homology of surfaces and counting simple geodesics
Any cusped hyperbolic surface S has a cusp region with bounding curve of length 2.
A norm on homology of surfaces and counting simple geodesics
No simple closed geodesic intersects a cusp region with boundary curve of length 2.
A norm on homology of surfaces and counting simple geodesics
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