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Webster 1913 Edition

Noun.

[L.

dissonantia

: cf. F.

dissonance

A mingling of discordant sounds; an inharmonious combination of sounds; discord.

Filled the air with barbarous

dissonance

Milton.

Want of agreement; incongruity.

Milton.

Noun.

[L., to be discordant; to sound.]

Discord; a mixture or union of harsh, unharmonious sounds, which are grating or unpleasing to the ear; as the dissonance of notes, sounds or numbers.

Disagreement.