perfect fourth

English

Etymology

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

Noun

perfect fourth (plural perfect fourths)

  1. A musical interval spanning four degrees of the diatonic scale. In the Western twelve-semitone system, it consists of five standard semitones.
    The perfect fourth has a pitch ratio close to 4:3.

Synonyms

  • P4
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