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
Idaho Statesman, 15 May 2026
All three can be addressed for under $50, and adjusting your thermostat to the 60-67°F range that sleep medicine physicians recommend costs nothing at all.
—Allison Palmer, Miami Herald, 13 May 2026
Set the thermostat to 65 to 68 degrees Fahrenheit.
—Jessica Swirble, Verywell Health, 11 May 2026
If that is not sufficiently cool for your taste, set the thermostat between 71°F and 78°F to avoid overworking your cooling system.
—Nafeesah Allen, Better Homes & Gardens, 10 May 2026
See All Example Sentences for thermostat
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Noun
With record-breaking heat hitting the Boise area recently, experts recommend setting thermostats between 76 and 78 degrees for the best balance of comfort and savings.
—Idaho Statesman, 15 May 2026
All three can be addressed for under $50, and adjusting your thermostat to the 60-67°F range that sleep medicine physicians recommend costs nothing at all.
—Allison Palmer, Miami Herald, 13 May 2026
Set the thermostat to 65 to 68 degrees Fahrenheit.
—Jessica Swirble, Verywell Health, 11 May 2026
If that is not sufficiently cool for your taste, set the thermostat between 71°F and 78°F to avoid overworking your cooling system.
—Nafeesah Allen, Better Homes & Gardens, 10 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 17 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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