phlogistian
(fləʊˈdʒɪstɪən)
[f. phlogiston + -ian.]
A believer in the existence or theory of phlogiston.
| 1799 Sir H. Davy in Beddoes Contrib. Phys. & Med. Knowl. 67 The phlogistians were obliged to consider all combustible bodies as combinations of different..substances with the undemonstrated phlogiston. |