different between phlogistics vs phlogistic

English

From Ancient Greek ????????? (phlogistós, “flammable”); in chemistry sense reinforced by phlogist(on) +? -ic.

phlogistic (comparative more phlogistic, superlative most phlogistic)

(medicine) Inflammatory; pertaining to inflammations and fevers. [from 18th c.]
(chemistry, physics, now historical) Pertaining to or containing phlogiston. [from 18th c.]
- 2004, Robert E Schofield, The Enlightened Joseph Priestley, Pennsylvania State University 2004, p. 100:
  His experiments, with their phlogistic explanations, led him to believe that the only distinct species of air were the fixed, alkaline, and acid.
(obsolete) Burning, fiery. [18th–19th c.]

(phlogiston):

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