1archaic term for triangle
- ‘It is therefore not enough to count trigons by signs or to expect a true square from signs at intervals at four’.’
- ‘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.’
- ‘You can also have a cylinder cone roof wedge trigon prism.’
- 1.1An ancient triangular lyre or harp.
- ‘Hence, the early Christians were unwilling to bend the knee when they heard the sound of the horn, pipe, lyre, trigon, harp, drum, and entire musical ensemble.’
- ‘When you hear the sound of the horn, the pipe, the lyre, the trigon and drum and all the musical instruments, you are commanded to bow down and worship.’
- 1.2A triangular cutting region formed by three cusps on an upper molar tooth.
- ‘The preprotocrista is weak and the postprotocrista absent; the trigon and talon basins are fully confluent.’
- ‘As the trigon and trigonid meet, they slide past one another, shearing the food item on the edges of the molars as shown.’
- ‘The basic triangular units with three cusps are the trigon and trigonid.’
- ‘The enamel is extensively crenulated and the postprotocrista low and subdivided so that the trigon and talon basins are nearly confluent, as in P. canpacius.’
- ‘The trigon + talon basin forms a broad, shallow depression, bordered posterolingually by the postprotocone fold + postcingulum and covered by crenulated enamel; no postprotocrista or hypocone is evident.’
Early 17th century (in the sense triangle): via Latin from Greek trigōnon, neuter of trigōnos three-cornered.