[sem-ee-tohn, sem-ahy-] 
| a pitch interval halfway between two whole tones. |
[sem-ee-ton-ik, sem-ahy-] , sem⋅i⋅ton⋅al [sem-ee-tohn-l, sem-ahy-] , adjective | sem·i·tone (sěm'ē-tōn', sěm'ī-) n. Music An interval equal to a half tone in the standard diatonic scale. Also called half step, halftone. sem'i·to'nal adj., sem'i·to'nal·ly adv. |
iˌtoʊn