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
Tamia Fowlkes, jsonline.com, 7 Aug. 2025
Another inmate of dorm No. 4, whose cell faces a thermostat, said he's seen the temperature reach 100 degrees indoors.
—Matthew Cupelli, IndyStar, 31 July 2025
Here are some tips for easing the load on your AC:
Use a programmable or smart thermostat.
—Alexis Simmerman, Austin American Statesman, 30 July 2025
Ultimately, Barber said changing the thermostat throughout the day could be a big adjustment for those who typically keep it at a set temperature.
—Ayana Archie, NPR, 23 July 2025
See All Example Sentences for thermostat
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Noun
According to the report, a surveyor from the Centers for Medicare and Medicaid Services noted a thermostat in the hall outside the resident's room read 86 degrees.
—Tamia Fowlkes, jsonline.com, 7 Aug. 2025
Another inmate of dorm No. 4, whose cell faces a thermostat, said he's seen the temperature reach 100 degrees indoors.
—Matthew Cupelli, IndyStar, 31 July 2025
Here are some tips for easing the load on your AC:
Use a programmable or smart thermostat.
—Alexis Simmerman, Austin American Statesman, 30 July 2025
Ultimately, Barber said changing the thermostat throughout the day could be a big adjustment for those who typically keep it at a set temperature.
—Ayana Archie, NPR, 23 July 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 19 Aug. 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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