·noun A kind of triangular lyre or harp.
II. Trigon ·noun A division consisting of three signs.
III. Trigon ·noun A figure having three angles; a triangle.
IV. Trigon ·noun Trine, an aspect of two planets distant 120 degrees from each other.
V. Trigon ·noun A kind of game at ball played by three persons standing at the angular points of a triangle.
VI. Trigon ·add. ·noun The cutting region of the crown of an upper molar, usually the anterior part. That of a lower molar is the Tri"go*nid (/).