Diatonic
Pronunciation : Di`a*ton"ic
Part of Speech : a.
Etymology : [L. diatonicus, diatonus, Gr. diatonique. See Tone.] (Mus.)
Definition : Defn: Pertaining to the scale of eight tones, the eighth of which is the octave of the first. Diatonic scale (Mus.), a scale consisting of eight sounds with seven intervals, of which two are semitones and five are whole tones; a modern major or minor scale, as distinguished from the chromatic scale.
Source : Webster's Unabridged Dictionary, 1913