thermometer
//θərˈmɒmɪtər//
Noun
thermometerSingular
thermometersPlural
1
An instrument used for measuring temperature, typically consisting of a glass tube containing mercury or alcohol that expands and rises in the tube as the temperature increases.
The thermometer shows that the temperature is 25 degrees.
2
A device, often digital, used to measure body temperature to check for fever or illness.
The nurse used a thermometer to check if I had a fever.