The Collaborative International Dictionary
Dephlogisticated air
Dephlogisticcate \De`phlo*gis"tic*cate\, v. t. [imp. & p. p.
Dephlogisticated; p. pr. & vb. n. Dephlogisticating.]
[Pref. de- + phlosticate: cf. F. d['e]phlogistiguer.] (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.
Wiktionary
dephlogisticated air
n. (context chemistry historical English) oxygen gas, as originally thought to be air deprived of phlogiston.
Usage examples of "dephlogisticated air".
Priestley, reporting on his latest experiences with dephlogisticated air.