Definition of phlogiston
: the hypothetical principle of fire regarded formerly as a material substance
Origin of phlogiston
New Latin, from Greek, neuter of phlogistos inflammable, from phlogizein to set on fire, from phlog-, phlox flame, from phlegein
First Known Use: 1733
Rhymes with phlogiston
Learn More about phlogiston
Britannica.com: Encyclopedia article about "phlogiston"
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