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1. Compatibility in opinion and action
   - harmoniousness
    
2. The structure of music with respect to the composition and progression of chords
   - musical harmony
    
3. A harmonious state of things in general and of their properties (as of colours and sounds); congruity of parts with one another and with the whole
   - concord, concordance, symphony
    
4. Agreement of opinions
   - concord, concordance
    
5. An agreeable sound property

Derived forms: harmonies

Type of: agreement, compatibility, music, order, sound property

Antonym: dissonance

Encyclopedia: Harmony, Pennsylvania