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thermostat

American  
[thur-muh-stat] / ˈθɜr məˌstæt /

noun

thermostats plural
  1. a device, including a relay actuated by thermal conduction or convection, that functions to establish and maintain a desired temperature automatically or signals a change in temperature for manual adjustment.


verb (used with object)

thermostatted, thermostated, thermostatting, thermostating
  1. to equip or control with a thermostat.

thermostat British  
/ ˈθɜːməˌstæt /

noun

  1. a device that maintains a system at a constant temperature. It often consists of a bimetallic strip that bends as it expands and contracts with temperature, thus breaking and making contact with an electrical power supply

  2. a similar device that actuates equipment, such as a sprinkler, when a certain temperature is reached

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

thermostat Scientific  
/ thûrmə-stăt′ /
  1. A device that automatically controls heating or cooling equipment in such a way as to maintain a temperature at a constant level or within a specified range, generally using a thermometer capable of triggering electrical switches that activate or deactivate the equipment.


thermostat Cultural  
  1. A device that monitors and automatically responds to changes in temperature and activates switches controlling devices such as furnaces or air conditioners.


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of thermostat

First recorded in 1825–35; thermo- + -stat

Explanation

If your house is always too cold in the winter, you might need to adjust the thermostat, or the dial that controls the indoor temperature. Most devices that emit heat have a thermostat, which controls how hot or cold things get. Car engines, electric blankets, furnaces, and ovens are all equipped with thermostats so that people can change the temperature, or in the case of cars, so that the car itself can keep the engine at the ideal temperature. The noun thermostat comes from the Greek word for heat, thermos, plus statos, or "a standing."

Keep Reading on Vocabulary.com

Vocabulary lists containing thermostat

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s a lot like rotating a Nest Learning Thermostat, and it’s only a smidge smaller than that.

From The Verge • Aug. 20, 2022

It has the model number A4R-G6ZUC, which is similar to IDs assigned to not only the previous Nest Wifi but also the Nest Mini, Thermostat, and even the Google Glass.

From The Verge • Aug. 15, 2022

Amazon Smart Thermostat $42 $60 31% off Developed in partnership with Resideo, the Amazon Smart Thermostat allows you to control the temperature of your home through Alexa voice controls and remotely via an app.

From The Verge • Jul. 30, 2022

Alternatively, you can buy the third-gen Google Nest Learning Thermostat for $229 instead of $279 when you use the code VERGE50.

From The Verge • Jun. 3, 2022

Tom Checked the Thermostat "Well, that's that," yawned the young inventor at length, locking up his desk.

From Tom Swift and His Giant Telescope by Gary, James

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