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noun
archaic term for triangle
‘This is not easy for me to contemplate and has troubled me for many years - I recall my reluctance to accept the theory that some trigons on a diamond octahedron were produced by dissolution.’
- ‘It is therefore not enough to count trigons by signs or to expect a true square from signs at intervals at four’.’
- ‘You can also have a cylinder cone roof wedge trigon prism.’
Origin
Early 17th century (in the sense ‘triangle’): via Latin from Greek trigōnon, neuter of trigōnos ‘three-cornered’.
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