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
Read more: Climate Change Increases Home Runs Climate Central tracks not just average rising temperatures, but extremely hot days, which are defined as days on which the thermometer hits or exceeds 91°F.
—
Jeffrey Kluger, TIME, 7 Feb. 2025
Broil 4 to 5 inches from the heat 13 to 16 minutes, turning once or until 145°F when tested with an instant-read thermometer.
—Elizabeth Fogarty, Better Homes & Gardens, 4 Feb. 2025
As thermometers plunged Tuesday morning, health warnings and road closures spread, but people also seized a rare opportunity to see their neighborhoods coated in snow — and to go sledding.
—Bill Chappell, NPR, 21 Jan. 2025
The ham is ready when a meat thermometer inserted into the thickest part reads 140 degrees Fahrenheit.
—Peter Burke, Fox News, 19 Dec. 2024
See all Example Sentences for thermometer 
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Jeffrey Kluger, TIME, 7 Feb. 2025
Broil 4 to 5 inches from the heat 13 to 16 minutes, turning once or until 145°F when tested with an instant-read thermometer.
—Elizabeth Fogarty, Better Homes & Gardens, 4 Feb. 2025
As thermometers plunged Tuesday morning, health warnings and road closures spread, but people also seized a rare opportunity to see their neighborhoods coated in snow — and to go sledding.
—Bill Chappell, NPR, 21 Jan. 2025
The ham is ready when a meat thermometer inserted into the thickest part reads 140 degrees Fahrenheit.
—Peter Burke, Fox News, 19 Dec. 2024
See all Example Sentences for thermometer
Dictionary Entries Near thermometer
Cite this Entry
“Thermometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermometer. Accessed 11 Feb. 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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