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1. A triangular lyre or harp of Roman and Greek antiquity.
3. Archaic A triangle.

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


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


(ˈtraɪ gɒn)

a triangle.
[1555–65; < Latin trigōnum triangle < Greek trígōnon]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.trigon - a three-sided polygontrigon - a three-sided polygon    
polygon, polygonal shape - a closed plane figure bounded by straight sides
acute triangle, acute-angled triangle - a triangle whose interior angles are all acute
equiangular triangle, equilateral triangle - a three-sided regular polygon
isosceles triangle - a triangle with two equal sides
oblique triangle - a triangle that contains no right angle
obtuse triangle, obtuse-angled triangle - a triangle that contains an obtuse interior angle
right triangle, right-angled triangle - a triangle with one right angle
scalene triangle - a triangle with no two sides of equal length
cuneus, 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 degreestrigon - (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
astrology, star divination - a pseudoscience claiming divination by the positions of the planets and sun and moon
triad, triple, triplet, trio - a set of three similar things considered as a unit
3.trigon - a triangular lyre of ancient Greece and Rometrigon - a triangular lyre of ancient Greece and Rome
lyre - a harp used by ancient Greeks for accompaniment
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