perfect fourth

EnglishEdit

EtymologyEdit

The word perfect refers to the fact that so-called perfect intervals are neither major nor minor.

NounEdit

perfect fourth (plural perfect fourths)

  1. A musical interval of the Western twelve-semitone system consisting of five semitones and spanning four degrees of the diatonic scale. It is enharmonically equivalent to an augmented third.
    The perfect fourth has a pitch ratio close to 4:3.

SynonymsEdit

Related termsEdit