trigon

tri·gon

T0356700 (trī′gŏn′)n.1. A triangular lyre or harp of Roman and Greek antiquity.2. See triplicity.3. Archaic A triangle.

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[Latin trigōnum, from Greek trigōnon, from neuter of trigōnos, triangular : tri-, tri- + gōniā, angle; see -gon.]

trigon

(ˈtraɪɡɒn) n1. (Historical Terms) (in classical Greece or Rome) a triangular harp or lyre2. (Mathematics) an archaic word for triangle[C17: via Latin from Greek trigōnon triangle. See tri-, -gon]

tri•gon

(ˈtraɪ gɒn)

n. a triangle. [1555–65; < Latin trigōnum triangle < Greek trígōnon]

Thesaurus

Noun	1.	trigon - a three-sided polygon triangle, trilateralpolygon, polygonal shape - a closed plane figure bounded by straight sidesacute triangle, acute-angled triangle - a triangle whose interior angles are all acuteequiangular triangle, equilateral triangle - a three-sided regular polygonisosceles triangle - a triangle with two equal sidesoblique triangle - a triangle that contains no right angleobtuse triangle, obtuse-angled triangle - a triangle that contains an obtuse interior angleright triangle, right-angled triangle - a triangle with one right anglescalene triangle - a triangle with no two sides of equal lengthcuneus, wedge, wedge shape - any shape that is triangular in cross section
	2.	trigon - (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degreestriplicityastrology, star divination - a pseudoscience claiming divination by the positions of the planets and sun and moontriad, triple, triplet, trio - a set of three similar things considered as a unit
	3.	trigon - a triangular lyre of ancient Greece and Romelyre - a harp used by ancient Greeks for accompaniment