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noun

thermostat

THMUHS-tat
noun
1
A device that automatically controls temperature by switching heating or cooling systems on or off.
"She turned the thermostat down before going to bed."

How to Use Thermostat

Learner’s notes

In plain EnglishThe control device that keeps a room or system at a set temperature.

Common pairings
adjust the thermostat set the thermostat

Word Forms

thermostats plural

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Fill the Gap

Can you complete this real example?

She turned the _____ down before going to bed.

Etymology

From thermo- ("heat") plus -stat ("that which stabilizes").

Definitions: FreeDict original editorial