Harmonium

//hɑɹˈmoʊ.ni.əm// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A small keyboard instrument that consists of a series of reed pipes, which sound when one of the keys is pressed to open a valve that allows air to pass through.

    "The only other man was a little grey-headed fellow with a pleasant face and quick, twinkling eyes, who sat at a harmonium in the corner."

  2. 2
    a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows wordnet
  3. 3
    Synonym of Hooke's atom.

Synonyms

All synonyms
reed organbaroque organcalliopecalliophonechoralceloelectric organ

Example

More examples

"The harmonium, accordion and mouth organ are aerophones with vibrating reeds."

Etymology

Borrowed from French harmonium, a term coined by French inventor Alexandre Debain in 1840.

Related phrases

organ harmoniumreed organ

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.