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definitions

minor mode

noun Music.
  1. a scale or key in which the third degree is a minor third above the tonic.

Origin of minor mode

First recorded in 1770–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for minor mode

minor mode

noun
  1. music any arrangement of notes present in or characteristic of a minor scale or key
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