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[[File:Imagemef.png|thumb|1305x1305px|The spectrum of mediants]]
''This page is about the way of dividing fifths into "thirds". For the use of "mediant" in the context of general mathematics and just intonation, see [[Mediant (just intonation)]].''[[File:Imagemef.png|thumb|1305x1305px|The spectrum of mediants]]
'''"Mediant"''' is a term devised by Vector to refer to an interval as defined by being a specified portion of a fifth, and that can be used in a chord with that fifth to produce a certain quality.  A mediant always has a fifth complement, and the portion of the fifth that they differ by is the contrastiveness of that pair of mediants. For example, the contrastiveness of the classical major and minor thirds is 10%, and for the septimal thirds it's about 24%.  
'''"Mediant"''' is a term devised by Vector to refer to an interval as defined by being a specified portion of a fifth, and that can be used in a chord with that fifth to produce a certain quality.  A mediant always has a fifth complement, and the portion of the fifth that they differ by is the contrastiveness of that pair of mediants. For example, the contrastiveness of the classical major and minor thirds is 10%, and for the septimal thirds it's about 24%.