• synonyms


See more synonyms for thermostat on Thesaurus.com
  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.
Show More
verb (used with object), ther·mo·stat·ted or ther·mo·stat·ed; ther·mo·stat·ting or ther·mo·stat·ing.
  1. to equip or control with a thermostat.
Show More

Origin of thermostat

First recorded in 1825–35; thermo- + -stat
Related formsther·mo·stat·ic, adjectivether·mo·stat·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for thermostat

manager, instrument, thermostat, director, switch, valve, governor, regulator, indicator

Examples from the Web for thermostat

Contemporary Examples of thermostat

Historical Examples of thermostat

British Dictionary definitions for thermostat


  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
Show More
Derived Formsthermostatic, adjectivethermostatically, adverb
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

Word Origin and History for thermostat


1831, from thermo- + -stat.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

thermostat in Science


  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.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

thermostat in Culture


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

Show More
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.