trigon

Definitions

  • WordNet 3.6
    • n trigon a triangular lyre of ancient Greece and Rome
    • n trigon (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
    • n trigon a three-sided polygon
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Webster's Revised Unabridged Dictionary
    • Trigon (Astrol) A division consisting of three signs.
    • Trigon A figure having three angles; a triangle.
    • Trigon (Gr. & Rom. Antiq) A kind of game at ball played by three persons standing at the angular points of a triangle.
    • Trigon (Gr. & Rom. Antiq) A kind of triangular lyre or harp.
    • Trigon (Zoöl) The cutting region of the crown of an upper molar, usually the anterior part. That of a lower molar is the Tri"go*nid.
    • Trigon (Astrol) Trine, an aspect of two planets distant 120 degrees from each other.
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Century Dictionary and Cyclopedia
    • n trigon The prominent anterior portion of an upper molar tooth forming a triangular area at whose angles are the three principal cusps —the protocone, paracone, and metacone. The study of the Mesozoic mammals has left no doubt that the upper and lower triangles, or ‘trigon’ and ‘trigonid,’ were derived from the reptilian protocone by the addition of lateral cusps. See cut under tooth, 1.
    • n trigon An abbreviation of trigonometrical; of trigonometry.
    • n trigon A triangle.
    • n trigon In astrology: The junction of three signs, the zodiac being divided into four trigons: the watery trigon, which includes Cancer, Scorpio, and Pisces; the earthly trigon, Taurus, Virgo, and Capricornus; the airy trigon, Gemini, Libra, and Aquarius; and the fiery trigon, Aries, Leo, and Sagittarius.
    • n trigon Trine: an aspect of two planets distant 120 degrees from each other.
    • n trigon In antiquity: A kind of triangular lyre or harp. Also called trigonon.
    • n trigon A game at ball played by three persons standing so as to be at the angles of a triangle.
    • n trigon An instrument of a triangular form, used in dialing.
    • n trigon In conchology, a shell of the genus Trigonia.
    • n trigon A trig; a skid.
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Chambers's Twentieth Century Dictionary
    • n Trigon trī′gon a three-cornered figure, a triangle—also Trigō′non:
    • n Trigon trī′gon (astrol.) the junction of three signs, the zodiac being divided into four trigons—the first or watery trigon, Cancer, Scorpio, Pisces; the earthly, Taurus, Virgo, Capricornus; the airy, Gemini, Libra, Aquarius; the fiery, Aries, Leo, Sagittarius
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Etymology

Webster's Revised Unabridged Dictionary
L. trigonum, Gr. ; (see Tri-) + a corner, angle: cf. F. trigone,
Chambers's Twentieth Century Dictionary
Gr. trigōnontri, tris, thrice, gōnia, an angle.

Usage

In literature:

The knife entered the bladder close to the trigone, making an opening large enough to admit the index finger.
"Anomalies and Curiosities of Medicine" by George M. Gould
The horns are trigonal, laterally compressed and knotted on the upper edge.
"Natural History of the Mammalia of India and Ceylon" by Robert A. Sterndale
Pre-sutural bristles: in Diptera, in a trigonate depression at outer ends of transverse suture, near dorso-pleural suture.
"Explanation of Terms Used in Entomology" by John. B. Smith
A figure of 3 sides is called a Trigon.
"Mechanical Drawing Self-Taught" by Joshua Rose
Grain is narrow, trigonous, oblong, translucent and shining.
"A Handbook of Some South Indian Grasses" by Rai Bahadur K. Ranga Achariyar
Behind the trigone a depression called "bas fond" is formed in the base of the bladder.
"Surgical Anatomy" by Joseph Maclise
It remained immovable only at the so-called trigonal numbers (3, 6, 9, 15, 21, etc.).
"Clever Hans" by Oskar Pfungst
The general form {hkl} is a trigonal pyramid consisting of three faces at one end of the crystal.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
Perianth on a short branch, mostly trigonal with the odd angle beneath.
"The Manual of the Botany of the Northern United States" by Asa Gray
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In news:

Saucony Grid Trigon 3 Guide & Ride.
Saucony Grid Trigon 3 Ride & Guide.
SevenPorts is proud to offer the Azoo Trigon Education Kit, an easy-to-hatch setup for trigon .
This educational kit allows users and participants to hatch and rear young trigon .
Yasuhiko Watanabe, Yasuhito Suenaga, "A Trigonal Prism-Based Method for Hair Image Generation," IEEE Computer Graphics and Applications, vol 12, no.
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In science:

Hence, the theta divisor of the Jacobian variety of a purely trigonal curve has third order symmetry with respect to the origin.
Abelian functions for trigonal curves of degree four and determinantal formulae in purely trigonal case
The sigma function (Purely trigonal case) 4.
Abelian functions for trigonal curves of degree four and determinantal formulae in purely trigonal case
Let X be a real trigonal curve, i.e. X has a g 1 3 .
Clifford Theorem for real algebraic curves
Second, the trigonal warping is substantial at low carrier concentrations.
Screening in gated bilayer graphene
In Section 5, we start the investigation of curves of Clifford dimension 1 by looking at hyperelliptic, trigonal and tetragonal curves.
Vector bundles of rank 2 computing Clifford indices
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