Altered scale
In jazz, the altered scale, altered dominant scale, or super-Locrian scale (Locrian ♭4 scale) is a seven-note scale that is a dominant scale where all non-essential tones have been altered. The triad formed from the root of the altered scale creates a diminished triad, but due to the inclusion of a diminished 11th, the scale comprises the three irreducibly essential tones that define a dominant seventh chord, which are root, major third, and minor seventh and that all other chord tones have been altered.