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mustard gas

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noun
an oily liquid, C4H8Cl2S, used as a chemical-warfare gas, blistering the skin and damaging the lungs, often causing blindness and death: introduced by the Germans in World War I.
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Origin of mustard gas

First recorded in 1915–20; so called from its mustard-like odor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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British Dictionary definitions for mustard gas

mustard gas

noun
an oily liquid vesicant compound used in chemical warfare. Its vapour causes blindness and burns. Formula: (ClCH 2 CH 2) 2 S
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

Scientific definitions for mustard gas

mustard gas
[ mŭstərd ]

An oily, volatile liquid that is corrosive to the skin and mucous membranes and causes severe, sometimes fatal respiratory damage. It was introduced in World War I as a chemical warfare agent. Chemical formula: C4H8Cl2S.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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