ther·mo·stat
ˈthər-mə-ˌstat 
: an automatic device for regulating temperature (as by controlling the supply of gas or electricity to a heating apparatus)
also
: a similar device for actuating fire alarms or for controlling automatic sprinklers
thermostated
ˈthər-mə-ˌsta-təd
also thermostatted; thermostating also thermostatting
also thermostatted; thermostating also thermostatting
: to provide with or control the temperature of by a thermostat
Examples of thermostat in a Sentence
Noun
I set the thermostat to 68 degrees.
Recent Examples on the Web
Marina Johnson, Louisville Courier Journal, 29 Oct. 2025
And the thermostat ranges from 41 to 95 degrees Fahrenheit to get the feel just right in your home.
—Nashia Baker, Architectural Digest, 27 Oct. 2025
The thermostats in the residence above had been turned down low because of President Jimmy Carter’s energy conservation program, making the East Wing so cold that she was forced to wear long underwear.
—Darlene Superville, Denver Post, 26 Oct. 2025
As estrogen decreases during menopause, nerves in the hypothalamus — an almond-size region deep inside the brain whose functions include helping regulate the body’s thermostat — become hyperactive and produce an overabundance of chemical signals called neurokinins.
—Jacqueline Howard, CNN Money, 24 Oct. 2025
See All Example Sentences for thermostat
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Noun
Lower the thermostat setting to between 50-55 degrees.
—Marina Johnson, Louisville Courier Journal, 29 Oct. 2025
And the thermostat ranges from 41 to 95 degrees Fahrenheit to get the feel just right in your home.
—Nashia Baker, Architectural Digest, 27 Oct. 2025
The thermostats in the residence above had been turned down low because of President Jimmy Carter’s energy conservation program, making the East Wing so cold that she was forced to wear long underwear.
—Darlene Superville, Denver Post, 26 Oct. 2025
As estrogen decreases during menopause, nerves in the hypothalamus — an almond-size region deep inside the brain whose functions include helping regulate the body’s thermostat — become hyperactive and produce an overabundance of chemical signals called neurokinins.
—Jacqueline Howard, CNN Money, 24 Oct. 2025
See All Example Sentences for thermostat
Cite this Entry
“Thermostat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermostat. Accessed 31 Oct. 2025.
Copy CitationMedical Definition
thermostat
1 of 2 noun
ther·mo·stat
ˈthər-mə-ˌstat
1
: an automatic device for regulating temperature (as by controlling the supply of gas or electricity to a heating apparatus)
2
: a piece of apparatus (as a constant-temperature chamber) regulated by a thermostat
thermostat
2 of 2 transitive verb
thermostated
-ˌstat-əd
or thermostatted; thermostating or thermostatting
or thermostatted; thermostating or thermostatting
: to provide with or control the temperature of by a thermostat
a thermostated centrifuge
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