noun: (organic chemistry) Any of several non-flammable refrigerants based on halogenated hydrocarbon including R-12, R-22, and R-23.
noun: (refrigeration, slang) A gaseous ozone-depleting refrigerant
noun: (environmentalism, slang) A chlorofluorocarbon
noun: Alternative spelling of freon [(organic chemistry) Any of several non-flammable refrigerants based on halogenated hydrocarbon including R-12, R-22, and R-23.]
