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
Recent Examples on the Web
Roast on a rimmed baking sheet until skin is crisp and a thermometer inserted into thickest parts (without touching bones) reads 165°F, about 25 minutes.
—
Martha Stewart, 20 Feb. 2026
The monitoring thermometer was missing from the reach in refrigerator.
—Veronica Fernandez-Alvarado
february 20, Sacbee.com, 20 Feb. 2026
Meanwhile on the other end of the thermometer, Four Seasons Resort and Residences Amaala at Triple Bay in Saudi Arabia lights up with desert fire rituals, stargazing, and a collaboration with celebrity trainer Harley Pasternak.
—Jane Alexander, Condé Nast Traveler, 19 Feb. 2026
Bake until a thermometer inserted into thickest portion of chicken registers 165°F, 15 to 20 minutes.
—Melinda Salchert, Southern Living, 19 Feb. 2026
See All Example Sentences for thermometer
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Martha Stewart, 20 Feb. 2026
The monitoring thermometer was missing from the reach in refrigerator.
—Veronica Fernandez-Alvarado
february 20, Sacbee.com, 20 Feb. 2026
Meanwhile on the other end of the thermometer, Four Seasons Resort and Residences Amaala at Triple Bay in Saudi Arabia lights up with desert fire rituals, stargazing, and a collaboration with celebrity trainer Harley Pasternak.
—Jane Alexander, Condé Nast Traveler, 19 Feb. 2026
Bake until a thermometer inserted into thickest portion of chicken registers 165°F, 15 to 20 minutes.
—Melinda Salchert, Southern Living, 19 Feb. 2026
See All Example Sentences for thermometer
Cite this Entry
“Thermometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermometer. Accessed 21 Feb. 2026.
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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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