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
Tara Massouleh McCay, Southern Living, 21 Feb. 2026
People were paid $125 to connect their electric vehicle and $100 to connect their thermostat.
—Susan Shelley, Oc Register, 21 Feb. 2026
In winter, have pros inspect coils, refrigerant, ducts, wiring, the condenser, and thermostat.
—Kamron Sanders, The Spruce, 15 Feb. 2026
To try to minimize costs, Gaspar unplugs his computer, coffee maker and other electronics when not in use and keeps the thermostat at 64 degrees.
—Tami Luhby, CNN Money, 12 Feb. 2026
See All Example Sentences for thermostat
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Noun
After that, top priorities include making sure the thermostat works and that all lights and fans can be turned on and off.
—Tara Massouleh McCay, Southern Living, 21 Feb. 2026
People were paid $125 to connect their electric vehicle and $100 to connect their thermostat.
—Susan Shelley, Oc Register, 21 Feb. 2026
In winter, have pros inspect coils, refrigerant, ducts, wiring, the condenser, and thermostat.
—Kamron Sanders, The Spruce, 15 Feb. 2026
To try to minimize costs, Gaspar unplugs his computer, coffee maker and other electronics when not in use and keeps the thermostat at 64 degrees.
—Tami Luhby, CNN Money, 12 Feb. 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 25 Feb. 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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