First Known Use: 1733
Dictionary
phlogiston
noun phlo·gis·ton \-tən\
Definition of PHLOGISTON
: the hypothetical principle of fire regarded formerly as a material substance
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Origin of PHLOGISTON
New Latin, from Greek, neuter of phlogistos inflammable, from phlogizein to set on fire, from phlog-, phlox flame, from phlegein
Rhymes with PHLOGISTON
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