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Fine Dictionary

apex

ˈeɪˌpɛks
WordNet
Corner-fitting; eroded: curved, semicircular in section, concave inside, tapering ends, circular hole in apex of curve.
Corner-fitting; eroded: curved, semicircular in section, concave inside, tapering ends, circular hole in apex of curve.
  1. (n) apex
    the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars
  2. (n) apex
    the highest point (of something) "at the peak of the pyramid"
Webster's Revised Unabridged Dictionary
  1. Apex
    (Mining) The end or edge of a vein nearest the surface.
Century Dictionary and Cyclopedia
  1. (n) apex
    The tip, point, or summit of anything. In botany: The end furthest from the point of attachment or base of an organ.
  2. (n) apex
    In geology, the top of an anticlinal fold of strata. [Pennsylvania coal-mines.] [This term as used in the U. S. Revised Statutes has been the occasion of much litigation. It is supposed to mean something nearly equivalent to outcrop (which see); but precisely in what it differs from outcrop has not been, neither does it seem capable of being, distinctly made out.]
  3. (n) apex
    In mining, the landing-point at the top of a slope.
  4. (n) apex
    In Roman antiquity, a symbolic ornament which the flamens and some other priests were required by law to wear. It consisted of a small cone of olive-wood surrounded with a lock of wool, and was secured on the head by fillets or adjusted to a cap.
  5. (n) apex
    In projective geometry, the point determined by 3 planes.
  6. (n) apex
    plural The abacusmarks. The apices of Gerbert's abacus are symbols for the digits from 1 to 9, but without the zero. See the extract.
Chambers's Twentieth Century Dictionary
  1. (n) Apex
    ā′peks the summit or point: the vertex of a triangle: the culminating point, climax of anything
Quotations
Henry David Thoreau
The stars are the apexes of what triangles!
Henry David Thoreau
Etymology

Webster's Revised Unabridged Dictionary L

Chambers's Twentieth Century Dictionary L. apex, the peak of the flamen's cap.

Usage in the news

The petition filed in the Wells County Superior Court for a judicial review of the Area Plan Commission's decision to allow Apex Wind Energy to proceed with its wind farm development has been dismissed. news-banner.com

Apex, rain get the best of Garner Post 232 Post 124 advances to state American Legion championships for the first time. carynews.com

Pultruded Fiberglass Siding by APEX Offers Homeowners Durable, Green Alternative to Fiber Cement and Vinyl. greenbuildermag.com

The APEX Ultrex® Siding System is a new, premium class of siding and trim. greenbuildermag.com

Extreme heat, extreme cold, high humidity, saltwater, and major storm systems are no match for APEX. greenbuildermag.com

The shooting of two mountain lion cubs has prompted an outcry from wildlife advocates and reignited a debate about balancing public safety with the welfare of the region's apex predator. mercurynews.com

Adamo Group saves time and money using an Apex 70 Ultra High Demolition hydraulic excavator and hydraulic hammer attachment to take down Detroit's Pier 19. forconstructionpros.com

Apex 70UHD Hydraulic Excavator Demolishes Pier 19 in Half the Time of Traditional Methods. forconstructionpros.com

Apex Jazz Festival 's slate expands in 2nd year Seth Walker will headline. carynews.com

The second annual Apex Jazz Festival is from 4 pm to 1 am Saturday at 11 venues along Salem Street in downtown Apex. carynews.com

Apex gets the last laugh Garner Post 232 drops 2 of 3 to Post 124. carynews.com

Hector "Macho" Camacho, the brash and charismatic boxer who once sat at the apex of his sport, was pronounced dead Saturday after doctors took him off life support at his family's direction. insidebayarea.com

Attorney Jason Wunsch, of Fuquay-Varina, talks with a supporter after a candidate forum in Apex. carynews.com

The endless political campaign season has reached its apex. barnstablepatriot.com

An 'apex hunter' rides to the rescue in Asian carp battle. michiganradio.org

Usage in scientific papers

Hence, denoting C ( ˆx, e) the cone of opening 2θ, having its apex at the end point, e, of a segment and its axis collinear with ˆx, the second segment will lie on an arbitrary separatrix of C ( ˆx, e).
On the physical relevance of random walks: an example of random walks on a randomly oriented lattice

Theorem 1 A pseudo-triangulation of S is minimum iff every point p ∈ S is pointed in the sense that its incident edges span less than π (i.e., they fal l within a cone apexed at p with aperture angle < π).
Computational Geometry Column 43

We now dress this L-star SL by a packet of n independent Brownian paths diffusing away from the apex of the star, located on the boundary, while avoiding the random paths of the star (Fig. 25).
Conformal Fractal Geometry and Boundary Quantum Gravity

The apex in the heat capacity curve indicates the denaturation transition.
Investigation of the Heat Capacities of Proteins by Statistical Mechanical Methods

Before we prove this, let us observe that the equality A/V = D, from condition 3, is Archimedes’ formula for the volume of a D-dimensional pyramid of unit height—where we define a pyramid as the convex hull of the base and the apex of some convex cone.
On the structure of the body of states with positive partial transpose

Usage in literature

I clambered to its apex, and then felt much at a loss as to what should be next done. "The Short-story" by William Patterson Atkinson

At the apex of the wedge stood another. "A Son Of The Sun" by Jack London

One of these is of triangular shape about 150 feet wide at the base and 80 feet in height to the apex. "The Tribes and Castes of the Central Provinces of India" by R. V. Russell

In the apex of the triangle stand an altar and a fountain, and before the altar once stood the statue of the builder of the portico. "The Best of the World's Classics, Vol. V (of X) - Great Britain and Ireland III" by Various

They were thick and leathery and tapered from base to apex like a triangle. "An American Robinson Crusoe" by Samuel. B. Allison

The whirlpool was a cone rather than a funnel, and I had come to the apex. "Danger! and Other Stories" by Arthur Conan Doyle

The stream, swerving to the left, flows on to the apex of the Big Bend. "The Adventures of Piang the Moro Jungle Boy" by Florence Partello Stuart

Lateral veins of leaflets or their main branches all or mostly all terminating in the apex of marginal teeth. "Northern Nut Growers Association Thirty-Fourth Annual Report 1943" by Various

On his head was a tall peaked fur cap, with a barred coon tail flopping at its apex. "The Rainy Day Railroad War" by Holman Day

Fortress Monroe lies at the apex of a wedge-shaped peninsula formed by the York and James Rivers, which converge as they flow toward the coast. "History of the United States, Volume 4" by E. Benjamin Andrews

Usage in poetry
The pyramid through ages past,
Through all their tempest, storm and blast,
Held its apex up to grasp
The elements.
Cheer up, brother; though the mountain
May be rugged, rough, and high,
From its apex flows a fountain;
Slake your thirst whenever dry.
It's my turn now! Oh, let me bare my chest
And spread a level sheet across my crib,
And be as wax for our meticulous Miss;
While she, poor dear, doing her anxious best,
Feels for the apex under the wrong rib
And wonders fiercely where my liver is.