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1. A highly flammable substance used to start a fire intentionally.
2. Chemistry A substance that speeds up a chemical reaction, especially by catalysis.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Chemistry) chem another name for accelerator3
[C20: from Latin from accelerāns, present participle of accelerāre to go faster]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ac•cel•er•ant(ækˈsɛl ər ənt)
1. something that speeds up a process.
3. a substance that intensifies a fire or accelerates its spread.
[1915–20; < Latin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.