n. (pl. -ies) 1 a a combination of simultaneously sounded musical notes to produce chords and chord progressions, esp. as having a pleasing effect. b the study of this. 2 a an apt or aesthetic arrangement of parts. b the pleasing effect of this. 3 agreement, concord. 4 a collation of parallel narratives, esp. of the Gospels. in harmony 1 (of singing etc.) producing chords; not discordant. 2 (often foll. by with) in agreement. harmony of the spheres see SPHERE.
[ ME f. OF harmonie f. L harmonia f. Gk harmonia joining, concord, f. harmos joint ]