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extinguishant

noun
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ex·​tin·​guish·​ant | \ -shənt \
plural -s

Definition of extinguishant

: an agent (such as water) that extinguishes fire

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“Extinguishant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extinguishant. Accessed 22 Sep. 2020.

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