Pronunciation

change
  • (US) IPA (key): /ˈθɝməstæt/ or /ˈθɝmoʊstæt/
  • (file)

Singular
thermostat

Plural
thermostats

 
A thermostat to controls room temperature
  1. (countable) A thermostat is a device that can tell if the temperature changes, and can then turn other machines on or off.
    My hot water system has a thermostat that turns the gas boiler on if the water is cold, and turns it off if the water gets too hot.