Antiq. [a. Gr. τρίγωνον triangle, a musical instrument of this form.] = TRIGON 3 c.
1727–47. Chambers, Cycl., Trigon, trigonon,… a musical instrument, used among the ancients.
1847. Leitch, trans. C. O. Müller’s Anc. Art, § 425. 505. A concert of female players on the flute, the cithern and the trigonon.
1864. Engel, Mus. Anc. Nat., 195. The trigonon ought … more properly to be classed with the lyre than with the harp.
