trigon noun.
['trʌɪgɒn] Also (now only
US in sense 5) trigone
[-ǝʊn].
M16.[Latin
trigonum from Greek
trigōnon neut. of
trigōnos three-cornered, from
tri- TRI- +
gōnos -GON. Cf.
TRIGONON,
TRIGONUM.]
1.
Astrology.
a. =
TRINE noun 2. Only in
M16.b. =
TRIPLICITY 1a. Now
rare or
obsolete.
L16.2. A triangular instrument used in surveying.
L16-E18.3. A triangle;
esp. an equilateral one. Now
rare or
obsolete.
E17.4.
Music. An ancient triangular lyre or harp.
E18.5.
Zoology. A triangle formed by three cusps on the tribospheric upper molar tooth.
L19. ■ trigonid
[trʌɪ'gɒnɪd, trɪ-] noun (
Zoology) a triangle formed by three cusps on the tribosphenic lower molar tooth
L19. [TahlilGaran] English Dictionary ▲