noun Chemistry.

  1. a colorless, slightly water-soluble, nonflammable gas, CCl2F2, that boils at −29°C: used chiefly as a propellant in aerosols and as a refrigerant.


  1. a colourless nonflammable gas easily liquefied by pressure: used as a propellant in aerosols and fire extinguishers and as a refrigerant. Formula: CCl 2 F 2See also Freon

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