[hohl-tohn] 
| a scale progressing entirely by whole tones, as C, D, E, F♯, G♯, A♯, C. |
whole-tone scale
in music, a scalar arrangement of pitches, each separated from the next by a whole-tone step (or whole step), in contradistinction to the chromatic scale (consisting entirely of half steps, also called semitones) and the various diatonic scales, such as the major and minor scales (which are different arrangements of whole and half steps).
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