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Vertex   Listen
noun
Vertex  n.  (pl. E. vertexes, L. vertices)  A turning point; the principal or highest point; top; summit; crown; apex. Specifically:
(a)
(Anat.) The top, or crown, of the head.
(b)
(Astron.) The zenith, or the point of the heavens directly overhead.
(c)
(Math.) The point in any figure opposite to, and farthest from, the base; the terminating point of some particular line or lines in a figure or a curve; the top, or the point opposite the base. Note: The principal vertex of a conic section is, in the parabola, the vertex of the axis of the curve: in the ellipse, either extremity of either axis, but usually the left-hand vertex of the transverse axis; in the hyperbola, either vertex, but usually the right-hand vertex of the transverse axis.
Vertex of a curve (Math.), the point in which the axis of the curve intersects it.
Vertex of an angle (Math.), the point in which the sides of the angle meet.
Vertex of a solid, or Vertex of a surface of revolution (Math.), the point in which the axis pierces the surface.






Collaborative International Dictionary of English 0.48








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"Vertex" Quotes from Famous Books



... guided along any curve ATB. When the rod has been pushed back to Q'Q, the tracer moves along the axis OX. On the frame a cone VCC' is mounted with its axis sloping so that its top edge is horizontal and parallel to TT', whilst its vertex V is opposite Q'. As the frame moves it turns the cone. A wheel W is mounted on the rod at T', or on an axis parallel to and rigidly connected with it. This wheel rests on the top edge of the cone. If now the tracer T, when pulled out through a distance y above Q, be moved ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 - "Bulgaria" to "Calgary" • Various

... appendix axis datum erratum focus formula genus larva medium memorandum nebula radius series species stratum terminus vertex ...
— An English Grammar • W. M. Baskervill and J. W. Sewell

... come down to breakfast gowned in her very best morning frock, one reserved for those rare occasions when people drop in over night and sleep with them. She has, indeed, all the festive appearance of a person who expects to be called away at a second's notice into a very vertex of dissipation. ...
— April's Lady - A Novel • Margaret Wolfe Hungerford

... met with in infants, the lesion is due to over-stretching of the plexus, and is nearly always of the Erb-Duchenne type. The injury is usually unilateral, it occurs with almost equal frequency in breech and in vertex presentations, and the left arm is more often affected than the right. The lesion is seldom recognised at birth. The first symptom noticed is tenderness in the supra-clavicular region, the child crying when this part is touched or the arm is moved. The attitude ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles

... "Hunt The Wumpus", dating back at least to 1972 (several years before {ADVENT}) on the Dartmouth Time-Sharing System. The wumpus lived somewhere in a cave with the topology of an dodecahedron's edge/vertex graph (later versions supported other topologies, including an icosahedron and M"obius strip). The player started somewhere at random in the cave with five 'crooked arrows'; these could be shot through up to three connected rooms, ...
— The Jargon File, Version 4.0.0

... summits to meet these. He stands now elaborately divided into Three groups against those Three simultaneities; forming (sadly wide apart, one would say, for such a force as Finck's) a very obtuse-angled triangle:—the obtuse vertex of which (if readers care to look on their Map) is Trohnitz, the road Brentano and Sincere are coming. On the base-angles, Maxen and Dohna, Finck expects Daun and the Reich. From Trohnitz to Maxen is near two miles; from ...
— History of Friedrich II. of Prussia, Vol. XIX. (of XXI.) • Thomas Carlyle

... or the vertex of the mathematical sciences, as it is called by Plato in his Republic, is that master discipline which particularly leads us up to an intelligible essence. Of this first of sciences, which is essentially ...
— Introduction to the Philosophy and Writings of Plato • Thomas Taylor

... a globe in a vessel of water, so that the vertex shall only just be covered, and place the globe eccentrically in the vessel so that the centre of the vessel may not be too far from the outside of the globe, and then impart an equable but slow motion ...
— Outlines of a Mechanical Theory of Storms - Containing the True Law of Lunar Influence • T. Bassnett

... way, chief from the Pelion vertex Chiron came, the bearer of sylvan spoil: for whatsoever the fields bear, whatso the Thessalian land on its high hills breeds, and what flowers the fecund air of warm Favonius begets near the running streams, these did he ...
— The Carmina of Caius Valerius Catullus • Caius Valerius Catullus

... upper part of the neck; crag: in Diptera; that part of the occiput lying over the junction of the head, i.e. between the vertex and neck. ...
— Explanation of Terms Used in Entomology • John. B. Smith

... cranium were unusually thick. The dura mater, which was thickened, and in many places bore marks of former inflammation, adhered to the bone at the vertex. On its internal surface, near the longitudinal sinus, there was a small ossified portion, half an inch long and the eighth of an inch thick. The convolutions of the brain were narrow, and very strongly marked. The pia mater bore marks ...
— Cases of Organic Diseases of the Heart • John Collins Warren

... four-tenths of the length or even less, and is hardly equal to the depth, while in the highest class the elevation is one-half greater than the depth or even more. We obtain another view of the comparative height and depth by drawing lines from the brow to the vertex and the base of the brain and comparing the two angles thus formed. In the good head we observe the great superiority of the upper angle over that formed by the line to the ear, the lower end of which corresponds to the lowest part of the brain, ...
— Buchanan's Journal of Man, July 1887 - Volume 1, Number 6 • Various



Words linked to "Vertex" :   extreme, intersection point, acme, point of intersection, roof peak, extreme point, peak, crown, apex, extremum, intersection



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