thermostat

Definition

A device that automatically responds to changes in temperature by activating a heating or cooling system to maintain the temperature at a desired setting.

Etymology

From thermo- + -stat.

Example Sentences

• "A smart thermostat can give you remote control over your heating and air conditioning, making sure your home is as cool or toasty as you like when you get home from work or wherever else, and a great one can monitor environmental conditions and your own preferences over time, adjust your systems to keep you comfortable and save you money. That’s why we spent several months testing eight smart thermostats to find the best one for your place."