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subtonic

[suhb-ton-ik]
noun
  1. the seventh tone of a scale, being the next below the upper tonic.

Origin of subtonic

First recorded in 1825–35; sub- + tonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for subtonic

subtonic

noun
  1. music the seventh degree of a major or minor scaleAlso called: leading note
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