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thermometer (n.)
"instrument for ascertaining temperatures," 1630s, from French thermomètre (1620s), coined by Jesuit Father Jean Leuréchon from Greek thermos "hot" (see thermo-) + metron "measure" (from PIE root *me- (2) "to measure").
An earlier, Latinate form was thermoscopium (1610s). The earliest such device was Galileo's air-thermometer, invented c. 1597. The common modern version, with mercury in glass, was invented by Fahrenheit in 1714. Related: Thermometric; thermometrical; thermometry.
also from 1630s
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updated on March 19, 2024
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Dictionary entries near thermometer
thermodynamic
thermodynamics
thermoelectric
thermograph
thermography
thermometer
thermonuclear
thermoplastic
Thermopylae
Thermos
thermosphere