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chlorofluorocarbon any of a group of compounds containing carbon, chlorine, and fluorine, which were once commonly used as refrigerants, solvents, and aerosol propellants but are now being phased out as they contribute to ozone depletion (abbreviated CFC.)
ozone depletion a steady decline in ozone in Earth's stratosphere, or a springtime decline in stratospheric ozone in Earth's polar regions. The primary cause of ozone depletion is man-made chemicals, particularly chlorofluorocarbons (CFCs).
ozone layer an atmospheric layer between ten and twenty miles above the earth that contains a substantial concentration of ozone, which absorbs ultraviolet radiation from space and prevents some heat loss from the earth; ozonosphere.
ozonize to treat, combine, or saturate with ozone. [2 definitions]
ozonosphere see "ozone layer."