Freon

[ free-on ]
/ ˈfri ɒn /

Trademark.

a brand name for any of a class of liquid or gaseous fluorocarbon or chlorofluorocarbon products, used chiefly as refrigerants.

British Dictionary definitions for freon

Freon
/ (ˈfriːɒn) /

noun

trademark any of a group of chemically unreactive chlorofluorocarbons used as aerosol propellants, refrigerants, and solvents