tritone UK /ˈtɹaɪˌtəʊ̯n/US /ˈtɹaɪˌtoʊn/adjective 1noun 2forms 1 adjective1 •Having three tones.The first cotume^([sic]) in which Mrs. Earle appeared was a tritone dress of crepe, with a brown velour cloche and brown calf sling pumps. — 1950 noun2 •An interval of three whole tones.The tritone has a pitch ratio close to 17:12. •A picture printed in three shades.In Photoshop’s Duotone mode you can create monotones, duotones, tritones, and quadtones—grayscale images to which you add one, two, three, or four colors. — 1995 formstritones
