A refrigerator (often called a "fridge" for short)'s a cooling appliance comprising a thermally insulated compartment and a heat pump—chemical or mechanical means—to transfer heat from it to the external environment, cooling the contents to a temperature below ambient. Refrigerators are extensively used to store foods which deteriorate at ambient temperatures; spoilage from bacterial growth and other processes's much slower at low temperatures. A device described as a "refrigerator"… (More on Refrigerator)