antiphlogistian

Someone who opposes phlogiston theory.

Antiphlogistians might argue that when a metallic calx was revived in inflammable air, air joined dephlogisticated air in the calx, the metal resuming its form and qualities without addition.

Opposed to phlogiston theory.

The other objections which Mr. Kirwan makes againſt the antiphlogiſtian doctrine, and which he deduces from the precipitation of the metals by each other, are not more difficult to be explained upon the principles I have laid down; […]