De′phlo‐gis″tic‐cate (?), v. t. [imp. & p. p.Dephlogisticated (?); p. pr. & vb. n.Dephlogisticating.] [Pref. de- + phlosticate: cf. F. déphlogistiguer.] (O. Chem.) To deprive of phlogiston, or the supposed principle of inflammability. Priestley.
Dephlogisticated air, oxygen gas; — so called by Dr. Priestly and others of his time.
— De′phlo‐gis′ti‐ca″tion (#), n.