dis·cord / ˈdiskôrd/ • n. 1. disagreement between people: a prosperous family who showed no signs of discord. ∎  lack of agreement or harmony between things: the discord between indigenous and Western cultures.2. Mus. lack of harmony between notes sounding together: the music faded in discord. ∎  a chord that (in conventional harmonic terms) is regarded as unpleasing or requiring resolution by another. ∎  any interval except a unison, an octave, a perfect fifth or fourth, a major or minor third and sixth, or their octaves. ∎  a single note dissonant with another.• v. [intr.] archaic (of people) disagree: we discorded commonly on two points. ∎  (of things) be different or in disharmony: the party's views were apt to discord with those of the leading members of the administration.

186. Discord (See also Confusion.)

1. Andras demon of discord. [Occultism: Jobes, 93]
2. discord, apple of caused conflict among goddesses; Trojan War ultimate result. [Gk. Myth.: Benét, 43]
3. Discordia goddess of strife and discord. [Gk. Myth.: Kravitz, 83]
4. Eris goddess of discord; threw apple of discord among Peleus’s wedding guests. [Gk. Myth.: Howe, 95]
5. 54-40 or Fight! slogan alluding to disputed borders of Oregon territory under joint British and U.S. occupation. [Am. Hist.: Payton, 241]
6. Gaza Strip small coastal desert on borders of Egypt and Israel, the control of which has been in continual dispute. [Middle East. Hist.: Payton, 264]
7. Great Schism, the Catholic Church divided over papal succession (1378–1417). [Eur. Hist.: Bishop, 376–379]
8. onyx provokes disagreement and separates lovers. [Gem. Symbolism: Kunz, 98–99]

discord XIII (mus. XV). — OF. des-, discord, f. des-, discorder — L. discordāre be at variance, f. discors, discord- discordant, f. DIS- 2 + cor, cord- HEART.
So discordant XIV.

discord. A chord which is restless, jarring to the ear, requiring to be resolved in a particular way if its presence is to be justified by the ear (or the note or interval responsible for producing this effect).