I. ˈthər-mə-ˌstat noun
Date: 1831
: 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
• ther·mo·stat·ic ˌthər-mə-ˈsta-tik adjective
• ther·mo·stat·i·cal·ly -ti-k(ə-)lē adverb
II. transitive verb
( ther·mo·stat·ed -ˌsta-təd ; also -stat·ted ; -stat·ing also -stat·ting )
Date: 1924
: to provide with or control the temperature of by a thermostat