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.

Source: Webster's Revised Unabridged Dictionary (1913)