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
Jennifer Lindahl, USA Today, 18 July 2025
Even if your home has sufficient air conditioning, setting the thermostat to a comfortable temperature can significantly spike your power bill.
—Maggie Horton, People.com, 16 July 2025
You're tempted to lower your thermostat for a chilly home, but as a result, you're met with energy bills that are just as high (if not higher) than the temperatures outside.
—Ashlyn Needham, Southern Living, 13 July 2025
Adjusting our own internal thermostats can help too.
—Jeffrey Kluger, Time, 25 June 2025
See All Example Sentences for thermostat
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Noun
Follow the 20-degree rule: don't set your thermostat more than 20 degrees cooler than the outside temperature.
—Jennifer Lindahl, USA Today, 18 July 2025
Even if your home has sufficient air conditioning, setting the thermostat to a comfortable temperature can significantly spike your power bill.
—Maggie Horton, People.com, 16 July 2025
You're tempted to lower your thermostat for a chilly home, but as a result, you're met with energy bills that are just as high (if not higher) than the temperatures outside.
—Ashlyn Needham, Southern Living, 13 July 2025
Adjusting our own internal thermostats can help too.
—Jeffrey Kluger, Time, 25 June 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 23 Jul. 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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