trigon
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tri·gon
(trī′gŏn′)n.
1. A triangular lyre or harp of Roman and Greek antiquity.
2. See triplicity.
3. Archaic A triangle.
[Latin trigōnum, from Greek trigōnon, from neuter of trigōnos, triangular : tri-, tri- + gōniā, angle; see -gon.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
trigon
(ˈtraɪɡɒn)n
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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tri•gon
(ˈtraɪ gɒn)n.
a triangle.
[1555–65; < Latin trigōnum triangle < Greek trígōnon]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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| Noun | 1. |  trigon - 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 |
| 2. |  trigon - (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degreesastrology, star divination - a pseudoscience claiming divination by the positions of the planets and sun and moon | |
| 3. |  trigon - a triangular lyre of ancient Greece and Romelyre - a harp used by ancient Greeks for accompaniment |
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