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phlogistonism

noun
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phlo·​gis·​ton·​ism | \ -əˌnizəm\
plural -s

Definition of phlogistonism

: the phlogiston theory or the system of chemistry built upon it

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“Phlogistonism.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/phlogistonism. Accessed 3 December 2019.

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