American Heritage® Dictionary of the English Language, Fourth Edition
- n. A triangular lyre or harp of Roman and Greek antiquity.
- n. See triplicity.
- n. Archaic A triangle.
Century Dictionary and Cyclopedia
- n. 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. An abbreviation of trigonometrical; of trigonometry.
- n. A triangle.
- n. 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. Trine: an aspect of two planets distant 120 degrees from each other.
- n. In antiquity: A kind of triangular lyre or harp. Also called trigonon.
- n. A game at ball played by three persons standing so as to be at the angles of a triangle.
- n. An instrument of a triangular form, used in dialing.
- n. In conchology, a shell of the genus Trigonia.
- n. A trig; a skid.
- n. geometry, rare A triangle.
- n. An ancient triangular harp of Oriental origin which had four strings and was often used for banquet music. Also called sabbeka, sackbut, sambuca.
- n. astrology A division consisting of three signs.
- n. astrology A trine; an aspect of two planets distant 120 degrees from each other.
- n. An old ball game played by three people standing in a triangular formation.
GNU Webster's 1913
- n. A figure having three angles; a triangle.
- n. A division consisting of three signs.
- n. Trine, an aspect of two planets distant 120 degrees from each other.
- n. A kind of triangular lyre or harp.
- n. A kind of game at ball played by three persons standing at the angular points of a triangle.
- n. (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 (�).
- n. a three-sided polygon
- n. (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
- n. a triangular lyre of ancient Greece and Rome
- From Ancient Greek τρίγωνον (trigōnon, "triangle"), neuter substantive of τρίγωνος (trigōnos, "three sided"), from τρεῖς (treis, "three") + γωνία (gōnia, "bend, angle"). (Wiktionary)
- Latin trigōnum, from Greek trigōnon, from neuter of trigōnos, triangular : tri-, tri- + gōniā, angle; see -gon. (American Heritage® Dictionary of the English Language, Fourth Edition)
“One of the facts that plays a large part in the result was known to the old astrologers, viz. that Jupiter and Saturn come into conjunction with a certain triangular symmetry; the whole scheme being called a trigon, and being mentioned several times by Kepler.”
“This is actionable, affordable, and feasible and more aptly it addresses the problem in situ meaning that the fix goes in without having to reset the pieces on the game board.www. trigon-international.com”
“The last time I had ventured into the room, a hodgepodge of toys had been shoved into the niche -- little boats made of wood, a leather ball for playing trigon, pebbles of colored glass for Egyptian board games.”
Ellery Queen Mystery Magazine
“His musics,  his trigon, his golden thigh, ”
“Figure 74 is a trigon, the angles at its centre being 120, and the angle at the circumference being 60, as marked.”
“In short, whoever takes his ephemeris in one hand and history in the other, will have no difficulty in convincing himself of the efficacy of such configurations; and though, by changing the signs, they may vary the effects and also the places most subject to their influence, yet it will appear that the observations of different authors (wherein they all agree that England is most passive to the fiery trigon) are founded on truth.”
“On the first syllable of equas a tristopha takes the place of the trigon.”
“The episematic torculus is seen in the final neuma of nobis (before the first trigon).”
“This is also sometimes used for one of the puncta of the climacus (first syllable of tuam, third and sixth neums, etc.) and towards the end of the group neuma on nobis (fifth sign from the end) we see a trigon subpuncte, the last dot of the trigon and the added punctum being drawn out.”
“It can produce white noise signals, sine wave, square wave, trigon wave, beat wave, sweep sine wave and a signal defined by a windows WAV file.”
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