| Thermostat (n.) A self-acting apparatus for regulating temperature by the unequal expansion of different metals, liquids, or gases by heat, as in opening or closing the damper of a stove, or the like, as the heat becomes greater or less than is desired. Thesaurus Entries calorimeter, chemical detector, clinical thermometer, cryometer, electric thermometer, electronic counter, electronic detector, error corrector, error detector, galvanothermometer, gas thermometer, liquid-level sensor, meat thermometer, metal detector, photoelectric sorter, pyrometer, pyrometric cone, resistance pyrometer, sensor, telethermometer, temperature sensor, thermocouple, thermoelectrometer, thermometrograph, thermostat, ultrasonic detector |