Pronunciation: (dis'u-nuns), [key]
1. inharmonious or harsh sound; discord; cacophony.
a. a simultaneous combination of tones conventionally accepted as being in a state of unrest and needing completion.
b. an unresolved, discordant chord or interval. Cf. consonance (def. 3). See illus. under resolution.
3. disagreement or incongruity.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.