- 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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