augmented fourth

noun

A type of tritone in musical composition. It spans four diatonic scale degrees like a perfect fourth but with an extension of a chromatic semitone. The number of diatonic degrees it spans is what distinguishes it from a diminished fifth.

“An augmented fourth on C: 1”

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Meanings

nounaugmented fourth (plural augmented fourths)

plural augmented fourths

  1. entertainmentA type of tritone in musical composition. It spans four diatonic scale degrees like a perfect fourth but with an extension of a chromatic semitone. The number of diatonic degrees it spans is what distinguishes it from a diminished fifth.

    An augmented fourth on C: 1

    1 more example

    e.g. C - F is a perfect fourth, C - F# is an augmented fourth, and C - F♭ is a diminished fourth.

Synonyms & antonyms

Also see
tritone

Translations

Finnish ylinouseva kvartti
  • ylinouseva kvarttiTranslations
French quarte augmentée
  • quarte augmentéeTranslations
Polish kwarta zwiększona
  • kwarta zwiększonaTranslations
Cite this entry
APA

augmented fourth. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/augmented%20fourth

MLA

“augmented fourth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/augmented%20fourth. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “augmented fourth,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/augmented%20fourth.

Source: augmented fourth on Wiktionary, CC BY-SA 4.0.