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Definition of thermometer:

  1. An instrument for measuring temperature, founded on the principle that changes of temperature in bodies are accompained by proportional changes in their volumes or dimensions.


oral thermometer, calorimeter, thermoscope, resistance thermometer, thermoelectric, telethermometer, clinical thermometer, thermo-regulator, regulator, anal thermometer, thermostat.

  • thermometer (part of speech: noun)

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