Complete Encyclopaedia of Music/A/Altered triads

by John Weeks Moore

Altered triads. The diatonic dissonant triad has, by license, its third sometimes flattened and sometimes sharpened ; and thus are formed two altered triads, which are very seldom used. The German authors term these triads anomalous.

These altered triads consist of a major and an extreme flat third, and are consequently both chromatic.