phlogistic

adjective3

1. •
   (historical) Pertaining to or containing phlogiston.

   • His experiments, with their phlogistic explanations, led him to believe that the only distinct species of air were the fixed, alkaline, and acid. — 2004
2. •
   Inflammatory; pertaining to inflammations and fevers.
3. •
   (no longer used) Burning, fiery.