# thermophone

> English word · Noun

## Definitions
1. A form of transducer that generates sound waves of precise power.
2. A portable telethermometer, using a telephone in connection with a differential thermometer.
3. 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.

## Etymology
From thermo- + -phone.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/thermophone