Word.ws English Dictionary

perfect fourth

perfect fourth noun: a musical interval spanning four degrees of the diatonic scale. In the Western twelve-semitone system, it consists of five standard semitones.

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

Synonyms of perfect fourth

  • P4

Forms of perfect fourth

pluralperfect fourths

Origin of perfect fourth

The word perfect refers to intervals that are neither major nor minor.

Questions about perfect fourth

What does perfect fourth mean?
Perfect fourth means a musical interval spanning four degrees of the diatonic scale. In the Western twelve-semitone system, it consists of five standard semitones.
What part of speech is perfect fourth?
Perfect fourth is a noun.
What is the plural of perfect fourth?
The plural of perfect fourth is perfect fourths.

Words near perfect fourth in the dictionary

  1. perfect cubes
  2. perfect field
  3. perfect fields
  4. perfect fifth
  5. perfect fifths
  6. perfect fourth
  7. perfect fourths
  8. perfect game
  9. perfect games
  10. perfect gold standard test
  11. perfect gold standard tests

Source and license

Adapted from Wiktionary: perfect fourth (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “perfect fourth.” Word.ws, https://word.ws/perfect_fourth. Based on Wiktionary, CC BY-SA 4.0.