Dictionary

thermophone en · NOUN

Etymology

From thermo- + -phone.

Meanings

1. A form of transducer that generates sound waves of precise power.
2. (historical) A portable telethermometer, using a telephone in connection with a differential thermometer.
3. (historical) A telephone involving heat effects, as changes in temperature (hence in length) due to pulsations of the line current in a fine wire connected with the receiver diaphragm.

Forms