D defs.my
Entry 2 senses Webster, 1913

Dissonance

/dĭs'-ən-əns/ · Dis·so·nance · IPA /ˈdɪsənəns/
01 n. A mingling of discordant sounds; an inharmonious combination of sounds; discord.
  1. 1.
    A mingling of discordant sounds; an inharmonious combination of sounds; discord.
    “Filled the air with barbarous dissonance.” Milton.
  2. 2.
    Want of agreement; incongruity.