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
Tessa Cooper, Southern Living, 1 Dec. 2025
And the thermostat ranges from 41 to 95 degrees Fahrenheit to get the feel just right in your home.
—Nashia Baker, Architectural Digest, 1 Dec. 2025
Each compartment has its own thermostat, which can be set between 36°F to 72°F.
—Mark Marino, Bon Appetit Magazine, 28 Nov. 2025
For example, when estrogen levels drop, the body’s internal thermostat, controlled by the hypothalamus in the brain, begins to not work properly.
—Akshay Syal, NBC news, 27 Nov. 2025
See All Example Sentences for thermostat
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Noun
So, before installing a new smart thermostat or smart light switches, consider saving your money and avoiding the frustration of technical difficulties with basic versions.
—Tessa Cooper, Southern Living, 1 Dec. 2025
And the thermostat ranges from 41 to 95 degrees Fahrenheit to get the feel just right in your home.
—Nashia Baker, Architectural Digest, 1 Dec. 2025
Each compartment has its own thermostat, which can be set between 36°F to 72°F.
—Mark Marino, Bon Appetit Magazine, 28 Nov. 2025
For example, when estrogen levels drop, the body’s internal thermostat, controlled by the hypothalamus in the brain, begins to not work properly.
—Akshay Syal, NBC news, 27 Nov. 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 5 Dec. 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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