Original: Liquefied petroleum gas (also called LPG, GPL, LP Gas, or autogas) is a mixture of hydrocarbon gases used as a fuel in heating appliances and vehicles, and increasingly replacing chlorofluorocarbons as an aerosol propellant and a refrigerant to reduce damage to the ozone layer.
Simplified: Liquefied petroleum gas (also known as LPG, LP Gas or autogas) is a mixture of hydrocarbon gases.