Freon

(frēän′)

any of a series of gaseous or low-boiling, inert, nonflammable compounds of fluorine, carbon, and often chlorine: used as refrigerants, solvents, and aerosol propellants

Origin: f(luorine) + re(frigerant) + -on, as in neon

See Freon in American Heritage Dictionary 4

A trademark used for a variety of nonflammable gaseous or liquid fluorinated hydrocarbons employed primarily as working fluids in refrigeration and air conditioning and as aerosol propellants.
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