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Synonyms

poison gas

American  

noun

  1. any of various toxic gases, especially those used in chemical warfare to kill or incapacitate on inhalation or contact, as phosgene, chlorine, etc.


poison gas British  

noun

  1. a gaseous substance, such as chlorine, phosgene, or lewisite, used in warfare to kill or harm

"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

Etymology

Origin of poison gas

First recorded in 1910–15

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In Ankara, Siegfried became co-director of a gas mask factory, a joint Turkish-German enterprise next door to a poison gas laboratory.

From Los Angeles Times Mar. 26, 2025

Auschwitz and the Holocaust didn't begin with poison gas.

From BBC Jan. 25, 2025

It concludes with a stanza describing the death of a fellow soldier following a poison gas attack:

From Salon Jul. 9, 2023

A few paragraphs later, though, he concedes that “some are noxious,” listing slavery and poison gas as examples.

From Washington Post Jun. 24, 2022

Like billboards whose occupants wore gas masks and reminded passersby that poison gas from Hitler’s Nazi Germany was still a very real threat.

From "Made You Up" by Francesca Zappia

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