har ‧ mo ‧ ni ‧ um /hɑːˈməʊniəm $ hɑːrˈmoʊ-/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: French ; Origin: harmonie ; ⇨ ↑ harmony ]
a musical instrument with a ↑ keyboard and metal pipes like a small ↑ organ
har ‧ mo ‧ ni ‧ um /hɑːˈməʊniəm $ hɑːrˈmoʊ-/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: French ; Origin: harmonie ; ⇨ ↑ harmony ]
a musical instrument with a ↑ keyboard and metal pipes like a small ↑ organ
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012