phlogiston

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noun phlo·gis·ton \-tən\

Definition of phlogiston

  1. :  the hypothetical principle of fire regarded formerly as a material substance

Origin and Etymology 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


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