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Definition of: diatonic
(dī′ə·ton′ik) adjective Music
Designating the regular tones of a major or minor key (or scale), in distinction from chromatic or occasional tones; having eight tones to an octave. [<MF diatonique <LL diatonicus <Gk. diatonikos <dia- through + teinein stretch]
—di′a·ton′i·cal·ly adverb
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