Harmonize, v. i. [imp. & p. p. Harmonized; p. pr. & vb. n. Harmonizing.]
Etymology: [Cf. F. harmoniser. ]
1. To agree in action, adaptation, or effect on the mind; to agree in sense or purport; as, the parts of a mechanism harmonize.
2. To be in peace and friendship, as individuals, families, or public organizations.
3. To agree in vocal or musical effect; to form a concord; as, the tones harmonize perfectly.
1 other Webster entry under this spelling
Harmonize, v. t.
1. To adjust in fit proportions; to cause to agree; to show the agreement of; to reconcile the apparent contradiction of.
2. (Mus.)
To accompany with harmony; to provide with parts, as an air, or melody.
Shades of meaning
Fernald has no entry of its own for harmonize; he lists it under agree.
He lists it without comment; the entries above explain its neighbors.