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
Greta Cross, USA Today, 23 May 2026
Stop wasting money on needless utility bills with a smart thermostat that intelligently adapts to climate patterns, supports robust schedules, and interfaces with other smart home systems for robust and easy control.
—K. Thor Jensen, PC Magazine, 22 May 2026
Pretty soon, success is going to boil down to who can set their thermostat most effectively anyway.
—Caroline Rose Giuliani, New Yorker, 19 May 2026
Maximize Your Home’s Circulation If your home is regularly feeling hot and stuffy, don’t default to cranking up the fans and dropping your thermostat.
—Ashley Chalmers, The Spruce, 16 May 2026
See All Example Sentences for thermostat
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Noun
But as outdoor temperatures rise, what is the best temperature setting for the thermostat during the warmer months?
—Greta Cross, USA Today, 23 May 2026
Stop wasting money on needless utility bills with a smart thermostat that intelligently adapts to climate patterns, supports robust schedules, and interfaces with other smart home systems for robust and easy control.
—K. Thor Jensen, PC Magazine, 22 May 2026
Pretty soon, success is going to boil down to who can set their thermostat most effectively anyway.
—Caroline Rose Giuliani, New Yorker, 19 May 2026
Maximize Your Home’s Circulation If your home is regularly feeling hot and stuffy, don’t default to cranking up the fans and dropping your thermostat.
—Ashley Chalmers, The Spruce, 16 May 2026
See All Example Sentences for thermostat
Cite this Entry
“Thermostat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermostat. Accessed 24 May. 2026.
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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