thermometer

noun

ther·​mom·​e·​ter thər-ˈmä-mə-tər 

thə-ˈmä-mə-tər

plural thermometers

: an instrument for determining temperature

specifically : one consisting of a sensor housed in a metal probe that registers a change in electrical resistance as a change in temperature

thermometric

ˌthər-mə-ˈme-trik 

adjective

thermometrically

ˌthər-mə-ˈme-tri-k(ə-)lē 

adverb

Examples of thermometer in a Sentence

Recent Examples on the Web

Add a generous pour of dry white wine around (not on top of) the chicken, and roast for 45 to 55 minutes at 350°F, or until a meat thermometer inserted in the center of one of the thickest pieces of meat reads 145°F. —Karla Walsh, Better Homes & Gardens, 6 Aug. 2025

For the best results, use a meat thermometer and remove the chicken from the oven when the thickest parts register 160°F. —Katie Rosenhouse, Southern Living, 3 Aug. 2025

The all-time high temperature at Tampa International Airport was broken on Sunday when the thermometer hit 100 degrees Fahrenheit (37.8 degrees Celsius). —Sasha Rogelberg, Fortune, 30 July 2025

In almost every configuration of the Spirit (there are six total), burners come with a heat boosting sear setting that increased the max temperature, according to my laser thermometer, up to over 800℉. —Noah Kaufman, Bon Appetit Magazine, 23 July 2025

Word History

Etymology

French thermomètre, from Greek thermē heat + French -o- + -mètre -meter — more at therm

First Known Use

1633, in the meaning defined above

Phrases Containing thermometer

• clinical thermometer
• dry bulb thermometer
• forehead thermometer
• temporal artery thermometer
• temporal thermometer

Rhymes for thermometer

• barometer
• bolometer
• chronometer
• geometer
• hydrometer
• hygrometer
• kilometer
• micrometer
• odometer
• photometer
• psychrometer
• pycnometer

Kids Definition

thermometer

noun

ther·​mom·​e·​ter thə(r)-ˈmäm-ət-ər 

: an instrument for measuring temperature

thermometric

ˌthər-mə-ˈme-trik 

adjective

Medical Definition

thermometer

noun

ther·​mom·​e·​ter thə(r)-ˈmäm-ət-ər 

: an instrument for determining temperature that usually consists either of a device providing a digital readout or of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature