CFC, chlorofluorocarbon - a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans; "the chlorine in CFCs causes depletion of atmospheric ozone"

carbon dioxide, carbonic acid gas, CO2 - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis

gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely

HFC, hydrofluorocarbon - a fluorocarbon emitted as a by-product of industrial manufacturing

perfluorocarbon, PFC - a powerful greenhouse gas emitted during the production of aluminum

sulfur hexafluoride, sulphur hexafluoride - a colorless gas that is soluble in alcohol and ether; a powerful greehouse gas widely used in the electrical utility industry