(1):
(v. t.) To adjust in fit proportions; to cause to agree; to show the agreement of; to reconcile the apparent contradiction of.
(2):
(v. i.) To agree in action, adaptation, or effect on the mind; to agree in sense or purport; as, the parts of a mechanism harmonize.
(3):
(v. i.) To be in peace and friendship, as individuals, families, or public organizations.
(4):
(v. i.) To agree in vocal or musical effect; to form a concord; as, the tones harmonize perfectly.
(5):
(v. t.) To accompany with harmony; to provide with parts, as an air, or melody.