Home › Words › T › thermophonethermophonethermophone · noun — A form of transducer that generates sound waves of precise power.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, thermophone ranks #11,302 of 43,053 for Qualifying.EtymologyFrom thermo- + -phone.nounA form of transducer that generates sound waves of precise power.A portable telethermometer, using a telephone in connection with a differential thermometer.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.Definitions & examples from Wiktionary (CC BY-SA 3.0).