diatonic scale

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Related to Heptatonia prima: diatonic scale, Heptatonia prima
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Noun1.diatonic scale - a scale with eight notes in an octave; all but two are separated by whole tones
musical scale, scale - (music) a series of notes differing in pitch according to a specific scheme (usually within an octave)
musical mode, mode - any of various fixed orders of the various diatonic notes within an octave