Thermometer (noun)

An instrument used to measure temperature.

Origin:

Mid 17th century: from french thermomètre, from greek thermē "heat" + -metron "measure".

Examples:

1. The thermometer showed that the room was 68 degrees.
2. The doctor used a thermometer to take the patient's temperature.
3. The thermometer was calibrated before being used.
4. The thermometer read 32 degrees, indicating that it was freezing outside.
5. The thermometer was placed in the oven to check the temperature of the baking goods.