Dictionary.com
definitions

dichlorodifluoromethane

[dahy-klawr-oh-dahy-floo r-oh-meth-eyn, -flawr-; dahy-klohr-oh-dahy-floo r-oh-meth-eyn; -flohr-]
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.

Origin of dichlorodifluoromethane

First recorded in 1955–60; di-1 + chloro-2 + di-1 + fluoro- + methane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for dichlorodifluoromethane

dichlorodifluoromethane

noun
  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
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