Phlo-gis'ton, n.

(flō-jis'ton) (Synop., § 130), n. [From Gr. φλογιστός, burnt, set on fire, from φλογίζω, to set on fire, to burn, fr. φλόξ, φλογός, a flame, blaze; Fr. phlogistique.] (O. Chem.) The supposed principle of inflammability, or the matter of fire in composition with other bodies; an hypothetical element, supposed, by Stahl, to be pure fire fixed in combustible bodies, in order to distinguish it from fire in action or in a state of liberty.