Perfect-fifth Definition
noun
(music) An interval equal to that of between the second and third harmonics of the harmonic series; in equal temperament, an interval of seven semitones spanning five degrees of the diatonic scale. It is enharmonically equivalent to a diminished sixth.
The perfect fifth has a pitch ratio close to 3:2.
Wiktionary
Other Word Forms of Perfect-fifth
Noun
Singular:
perfect-fifth
Plural:
perfect-fifths
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