a device or a chemical substance for preventing or removing ice.
Origin of deicer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a mechanical or thermal device designed to melt or stop the formation of ice on an aircraft, usually fitted to the aerofoil surfacesCompare anti-icer
a chemical or other substance used for this purpose, esp an aerosol that can be sprayed on car windscreens to remove ice or frost
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