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
The market’s employees lacked knowledge on correct reheating temperature for hot holding potentially hazardous foods, thermometer calibration and chlorine test strip testing method.
—
Veronica Fernandez-Alvarado
january 30, Sacbee.com, 30 Jan. 2026
The state’s agriculture and tourism industries could take a hit as the thermometer goes down this weekend across the state.
—Michael Butler, Miami Herald, 30 Jan. 2026
Grossman said the patient can take their own vitals with a blood-pressure machine, thermometer, pulse monitor and a scale.
—Steve Sadin, Chicago Tribune, 29 Jan. 2026
What to set your thermostat to in winter The Department of Energy's recommendation is to set your thermometer to 68 degrees during the winter.
—Iris Seaton, The Providence Journal, 23 Jan. 2026
See All Example Sentences for thermometer
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Veronica Fernandez-Alvarado
january 30, Sacbee.com, 30 Jan. 2026
The state’s agriculture and tourism industries could take a hit as the thermometer goes down this weekend across the state.
—Michael Butler, Miami Herald, 30 Jan. 2026
Grossman said the patient can take their own vitals with a blood-pressure machine, thermometer, pulse monitor and a scale.
—Steve Sadin, Chicago Tribune, 29 Jan. 2026
What to set your thermostat to in winter The Department of Energy's recommendation is to set your thermometer to 68 degrees during the winter.
—Iris Seaton, The Providence Journal, 23 Jan. 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 1 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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