major seventh

English

Noun

major seventh (plural major sevenths)

  1. (music) A musical interval of the Western twelve-semitone system consisting of eleven semitones and spanning seven degrees of the diatonic scale. It is one semitone wider than a minor seventh and enharmonically equivalent to a diminished octave.
    The major seventh has a pitch ratio close to 17:9.

Abbreviations
  • M7
  • maj7
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