phlogiston
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.phlo·gis·ton
noun \-tən\Definition of PHLOGISTON
: the hypothetical principle of fire regarded formerly as a material substance
See 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
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