Thermostat (noun)

A device for regulating temperature, typically in heating or cooling systems, by controlling the flow of heat.

Origin:

Derived from the greek words 'thermo' meaning 'heat' and 'stato' meaning 'to stand', the term 'thermostat' was first used in the late 19th century to describe a device for regulating temperature.

Examples:

1. The thermostat was set to turn on the air conditioning when the temperature in the room reached a certain level.
2. The digital thermostat allowed the homeowner to easily adjust the temperature in their home from a smartphone app.
3. The car's thermostat kept the engine at the ideal temperature, ensuring that it wouldn't overheat or stall.
4. The programmable thermostat could be set to automatically adjust the temperature at different times of the day.
5. The smart thermostat was designed to learn the occupants' heating and cooling preferences, automatically adjusting the temperature to their comfort.