noun
1. a musician who sings or plays in harmony
• Syn: ↑harmoniser
• Derivationally related forms: ↑harmonise (for: ↑harmoniser), ↑harmonize
• Hypernyms: ↑musician, ↑instrumentalist, ↑player
2. a mediator who brings one thing into harmonious agreement with another
• Syn: ↑harmoniser
• Derivationally related forms: ↑harmonise (for: ↑harmoniser), ↑harmonize
• Hypernyms: ↑mediator, ↑go-between, ↑intermediator, ↑intermediary, ↑intercessor
Useful english dictionary. 2012.