Definition of Phlogeston
Phlogiston, a name given by the old chemists to an imaginary
principle of fire, latent in bodies, and which escaped during combustion.
- Wikipedia
Phlo*gis"ton (?), n. [NL., fr. Gr. &?;
burnt, set on fire, fr. &?; to set on fire, to burn, fr. &?;, &?;, a
flame, blaze. See Phlox.] (Old Chem.) The
hypothetical principle of fire, or inflammability, regarded by Stahl
as a chemical element.
&fist; This was supposed to be united with combustible
(phlogisticated) bodies and to be separated from incombustible
(dephlogisticated) bodies, the phenomena of flame and burning
being the escape of phlogiston. Soot and sulphur were regarded as
nearly pure phlogiston. The essential principle of this theory was,
that combustion was a decomposition rather than the union and
combination which it has since been shown to be.
- Webster's Unabridged Dictionary (1913)
- The hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning.
- The Nuttall Encyclopedia
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