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[mee-dee-uh nt]
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  1. the third degree of a major or minor musical scale.

Origin of mediant

1720–30; < Italian mediante < Late Latin mediant- (stem of mediāns), present participle of mediāre to be in the middle. See medium, -ant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for mediant

Historical Examples

  • Sound contains three sounds: That of the tonic, the dominant, and the mediant.

    Delsarte System of Oratory


British Dictionary definitions for mediant


  1. music
    1. the third degree of a major or minor scale
    2. (as modifier)a mediant chord

Word Origin

C18: from Italian mediante, from Late Latin mediāre to be in the middle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mediant


"third note of the diatonic scale," 1753, from Italian mediante, from Late Latin mediantem (nominative medians) "dividing in the middle," present participle of mediare "to be in the middle" (see medial (adj.)). So called from being midway between the tonic and the dominant.

Online Etymology Dictionary, © 2010 Douglas Harper

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