Noun | 1. | greenhouse emission - a gas that contributes to the greenhouse effect by absorbing infrared radiation 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 greenhouse gas widely used in the electrical utility industry |