The just adaptation of parts to each other, in any system
or combination of things, or in things, or things intended to form a
connected whole; such an agreement between the different parts of a
design or composition as to produce unity of effect; as, the harmony of
the universe.

Concord or agreement in facts, opinions, manners,
interests, etc.; good correspondence; peace and friendship; as, good
citizens live in harmony.

A literary work which brings together or arranges
systematically parallel passages of historians respecting the same
events, and shows their agreement or consistency; as, a harmony of the
Gospels.

A succession of chords according to the rules of
progression and modulation.

The science which treats of their construction and
progression.

See Harmonic suture, under Harmonic.