perfect fourth

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English[edit]

Etymology[edit]

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

Noun[edit]

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[edit]

Related terms[edit]

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