noun ther·mo·phone \ˈthərməˌfōn\

Definition of thermophone

  1. 1 :  a portable telethermometer using a telephone in connection with a differential thermometer

  2. 2 :  a telephone involving heat effects (as changes in temperature) due to pulsations of the line current in a fine wire connected with the receiver diaphragm

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Origin and Etymology of thermophone

International Scientific Vocabulary therm- + telephone

Seen and Heard

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to cast off or become cast off

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