• Harmonium

    Origin

    From French harmonium, a term coined by Alexandre Debain.

    Full definition of harmonium

    Noun

    harmonium

    (plural harmoniums)
    1. (music) A small keyboard instrument consisting of a series of reed pipes which sound when air is allowed to pass through them by means of a valve that opens when a key is depressed.

    Usage notes

    See Wikipedia for differences in usage between US and UK

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