/ (ˈhælɒn) /
any of a class of chemical compounds derived from hydrocarbons by replacing one or more hydrogen atoms by bromine atoms and other hydrogen atoms by other halogen atoms (chlorine, fluorine, or iodine). Halons are stable compounds that are used in fire extinguishers, although they may contribute to depletion of the ozone layer
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
Examples from the Web for halon
Halon 1301, the standard fire suppressant employed on airliners, has no effect on lithium-ion battery fires.Passenger Flights Must Stop Carrying Lithium-Ion Batteries as Cargo|Clive Irving|May 5, 2014|DAILY BEAST
Science definitions for halon
[ hā′lŏn ]
Any of several compounds consisting of one or two carbon atoms combined with bromine and one or more other halogens. Halons are gases and are used as fire-extinguishing agents. They are between three and ten times more destructive to the ozone layer than CFCs are.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.