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phlogiston

Definition of phlogiston

noun

[mass noun]
  • a substance supposed by 18th-century chemists to exist in all combustible bodies, and to be released in combustion.

Origin:

mid 18th century: modern Latin, from Greek phlogizein 'set on fire', from phlox, phlog- 'flame', from the base of phlegein 'to burn'

phlogiston in other Oxford dictionaries

Definition of phlogiston in the US English dictionary
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