|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|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a chattering or flighty, light-headed person.|
|thermostat (thûr'mə-stāt') Pronunciation Key
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.
A device that monitors and automatically responds to changes in temperature and activates switches controlling devices such as furnaces or air conditioners.