perfect fifth

noun

An interval equal to that of between the second and third harmonics of the harmonic series. In twelve-tone equal temperament, it spans seven semitones or five degrees of the diatonic scale.

“The perfect fifth has a pitch ratio close to 3:2.”

Similar
P5
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Meanings

nounperfect fifth (plural perfect fifths)

plural perfect fifths

  1. entertainmentAn interval equal to that of between the second and third harmonics of the harmonic series. In twelve-tone equal temperament, it spans seven semitones or five degrees of the diatonic scale.

    The perfect fifth has a pitch ratio close to 3:2.

    Synonyms: P5

Synonyms & antonyms

nounAn interval equal to that of between the second and third harmonics of the harmonic series. In twelve-tone equal temperament, it spans seven semitones or five degrees of the diatonic scale.

Similar
P5

Translations

Czech čistá kvinta
  • čistá kvintainterval between the first and second overtones or of seven semitones
Finnish puhdas kvintti
  • puhdas kvinttiinterval between the first and second overtones or of seven semitones
French quinte juste
  • quinte justeinterval between the first and second overtones or of seven semitones
German reine Quinte
  • reine Quinteinterval between the first and second overtones or of seven semitones
Icelandic hrein fimmund
  • hrein fimmundinterval between the first and second overtones or of seven semitones
Italian quinta giusta
  • quinta giustainterval between the first and second overtones or of seven semitones
Japanese 完全五度
  • 完全五度 (kanzengodo)interval between the first and second overtones or of seven semitones
Polish kwinta czysta
  • kwinta czystainterval between the first and second overtones or of seven semitones
Russian чи́стая кви́нта
  • чи́стая кви́нта (čístaja kvínta)interval between the first and second overtones or of seven semitones
Spanish quinta justa
  • quinta justainterval between the first and second overtones or of seven semitones
Swedish ren kvint
  • ren kvintinterval between the first and second overtones or of seven semitones
Cite this entry
APA

perfect fifth. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/perfect%20fifth

MLA

“perfect fifth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/perfect%20fifth. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “perfect fifth,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/perfect%20fifth.

Source: perfect fifth on Wiktionary, CC BY-SA 4.0.