Английский разговорный словарь (основной) - diatonic
Diatonic
diatonic
ˌdaɪəˈtɔnɪk adj. Mus. 1 (of a scale, interval, etc.) involving only notes proper to the prevailing key withoutchromatic alteration. 2 (of a melody or harmony) constructed fromsuch a scale. [F diatonique or LL diatonicus f. Gk diatonikos at intervals of a tone (as DIA-, TONIC)]