Definition of "phlogistic"

phlogistic

adjective
comparative more phlogistic, superlative most phlogistic
1. (medicine) Inflammatory; pertaining to inflammations and fevers.
2. (chemistry, physics, now historical) Pertaining to or containing phlogiston.
  Quotations
  His experiments, with their phlogistic explanations, led him to believe that the only distinct species of air were the fixed, alkaline, and acid.
  2004, Robert E Schofield, The Enlightened Joseph Priestley, Pennsylvania State University, published 2004, page 100
3. (obsolete) Burning, fiery.