• Any instrument or device which measures and indicates temperatures. Examples include electronic thermometers, quartz thermometers, infrared thermometers, and bimetallic thermometers. Also called temperature meter, or pyrometer (2).
  • synonymtemperature meter


  • An instrument for measuring temperature, essential for cooking especially for determining when meat is cooked, for oven, freezer, refrigerator, fat and sugar temperatures and for ensuring adequate defrosting and cooking in microwave ovens

Health Economics

  • (written as Thermometer)
    In health economics, reference to a thermometer is likely to be to a device known as a visual analogue scale resembling a thermometer with the aid of which subjects in an experiment assign numbers to states of health.

Origin & History of “thermometer”

Greek thérmē meant ‘heat’ (it came from prehistoric Indo-European *ghwerm-, *ghworm-, which probably also produced English warm). From it was formed French thermomètre (first recorded in 1624), which was borrowed into English in the early 1630s. The same source produced English therm (19th c.) and thermal (18th c.); and thermos (from the related Greek thermós ‘hot’) was registered as a trademark for a vacuum flask in 1907.