har·mo·ni·um
noun/hɑːˈməʊniəm/
/hɑːrˈməʊniəm/
- a musical instrument like a small organ. The player's feet operate the pedals to force air through metal pipes to produce the sound and the different notes are played on the keyboard.
簧风琴（键盘乐器，以气流使簧片振动发声） Word Originmid 19th cent.: from French, from Latin harmonia ‘joining, concord’ (from Greek, from harmos ‘joint’) or Greek harmonios ‘harmonious’.