phlogiston.
The hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning.
Meaning & usage
The hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning.
Where this word comes from
From New Latin phlogiston, coined by Georg Ernst Stahl in 1702, from Ancient Greek φλογιστόν (phlogistón), neuter of φλογιστός (phlogistós, “burnt up, inflammable”), from φλογίζω (phlogízō, “to set fire to”), from φλόξ (phlóx, “flame”).
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Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.