diminished fifth en · NOUN
Meanings
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A type of tritone in musical composition formed by narrowing a perfect fifth by one chromatic semitones. In twelve-tone equal temperament, it spans five diatonic scale degrees like a perfect fifth but narrower by a semitone. The number of diatonic degrees it spans is what distinguishes it from an augmented fourth.
C - G is a perfect fifth, C - G♭ is a diminished fifth, and C - G# is an augmented fifth.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| diminished fifths | Number=Plur | lexicographic |
Relateds
dissonance · musical interval · tritone · augmented fifth · augmented fourth · perfect fifth