any of several volatile, inert, saturated compounds of carbon, fluorine, chlorine, and hydrogen: used as refrigerants, foam-blowing agents, solvents, and, formerly, as aerosol propellants until scientists became concerned about depletion of the atmospheric ozone layer.
Regulations are outlawing certain refrigerants, such as chlorofluorocarbons, which contain ozone-depleting chemicals.
Thanks to the global ban on chlorofluorocarbons, stratospheric ozone levels there are slowly recovering.
British Dictionary definitions for chlorofluorocarbons
(chem) any of various gaseous compounds of carbon, hydrogen, chlorine, and fluorine, used as refrigerants, aerosol propellants, solvents, and in foam: some cause a breakdown of ozone in the earth's atmosphere CFC
(klôr'ō-flr'ō-kär'bən) A fluorocarbon containing chlorine. Chlorofluorocarbons are destructive to the Earth's ozone layer. For this reason, the production and use of chlorofluorocarbons has been sharply reduced in recent years.