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diminished seventh. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Noun
diminished seventh (plural diminished sevenths)
- (music) A musical interval equivalent to narrowing a minor seventh by one chromatic semitone. In twelve-tone equal temperament, it consists of nine semitones and spans seven degrees of the diatonic scale, is one semitone narrower than a minor seventh, and is enharmonically equivalent to a major sixth.