noun.
A harsh, disagreeable combination of sounds; discord.
noun.
Lack of agreement, consistency, or harmony; conflict.
noun.
A combination of tones contextually considered to suggest unrelieved tension and require resolution.
The Century Dictionary and Cyclopedia
noun.
The quality or fact of being dissonant; an inharmonious mixture or combination of sounds; harshness of combined sounds; discord.
noun.
Specifically— In music: The combination of tones that are so far unrelated to each other as to produce beats: distinguished from consonance. See beat, n.
noun.
The interval between two such tones. See discord.
noun.
Discord in general; disagreement; incongruity; inconsistency.
the GNU version of the Collaborative International Dictionary of English
noun.
A mingling of discordant sounds; an inharmonious combination of sounds; discord.