Locrian /ˈləʊkɹiən/ adjective3 •Pertaining to the ancient Greek region of Locris. •Designating an ancient Greek mode, of uncertain detail.scattered piano keys (all white, an octave on B to be exact—or H, in the German nomenclature—the notes of the rejected Locrian mode — 1973 •Designating a minor scale with the second and fifth scale degrees lowered by a semitone.
