perfect PUR-fekt Your browser does not support the audio element. [ English ] Definition 1. Term applied to the intervals of a unison, octave, fourth, and fifth when they are exactly in tune and not Augmented or diminished. 2. Term used in Medieval music to define the relationship of 3:1. Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-06-06 17:10:07
