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extinguishant

[ik-sting-gwi-shuh nt]
noun
  1. a substance used in extinguishing fires.
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Origin of extinguishant

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for extinguishant

extinguishant

noun
  1. a substance, such as a liquid, foam, powder, etc, used in extinguishing fires
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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