(organic chemistry) The halogenated hydrocarbon CClF₃; it is a CFC once used as a refrigerant
counterflashing
counterflashing
noun
(construction) Formed metal or elastomeric sheeting secured on or into a wall, curb, pipe or other surface, to cover and protect the upper edge of a base flashing and its associated fasteners.
dichlorodifluoromethane
dichlorodifluoromethane
noun
(organic chemistry) A chlorofluorocarbon halomethane formerly used as a refrigerant and aerosol spray propellant, now banned in many countries because of its effects on the ozone layer.