telharmonium

[tel-hahr-moh-nee-uh m]
noun
  1. a musical keyboard instrument operating by alternating currents of electricity which, on impulse from the keyboard, produce music at a distant point via telephone lines.

Origin of telharmonium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of telharmonium