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
Examples of thermometer in a Sentence
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Playing there in October, Nadal, Świątek and their foes had to reckon with brisk winds, gray skies and plummeting thermometers.
—
Matthew Futterman, New York Times, 11 Oct. 2025
It's loaded with great tools like a stethoscope, a blood pressure cuff, a syringe, a rolling thermometer and more.
—Nora Colomer
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 7 Oct. 2025
Lack of accurate thermometers in all refrigeration/freezer units storing TCS food.
—Gege Reed, Louisville Courier Journal, 3 Oct. 2025
The temperature is the actual air reading — what a thermometer records in the shade.
—Brandi D. Addison, jsonline.com, 3 Oct. 2025
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Matthew Futterman, New York Times, 11 Oct. 2025
It's loaded with great tools like a stethoscope, a blood pressure cuff, a syringe, a rolling thermometer and more.
—Nora Colomer
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 7 Oct. 2025
Lack of accurate thermometers in all refrigeration/freezer units storing TCS food.
—Gege Reed, Louisville Courier Journal, 3 Oct. 2025
The temperature is the actual air reading — what a thermometer records in the shade.
—Brandi D. Addison, jsonline.com, 3 Oct. 2025
See All Example Sentences for thermometer
Cite this Entry
“Thermometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermometer. Accessed 15 Oct. 2025.
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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
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