- a brand name for any of a class of liquid or gaseous fluorocarbon or chlorofluorocarbon products, used chiefly as refrigerants.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- trademark any of a group of chemically unreactive chlorofluorocarbons used as aerosol propellants, refrigerants, and solvents
Word Origin and History for freon
refrigerant chemical, 1932, proprietary name in U.S. for fluorocarbons used in refrigeration technology. "The name was apparently constructed from fre(eze) + -on used as an arbitrary suffix" [Flood].
Online Etymology Dictionary, © 2010 Douglas Harper