Webster's Revised Unabridged Dictionary · 1913

Dephlogisticcate

Dephlogisticcate , transitive verb

[Prefix de- + phlosticate: compare French déphlogistiguer.]

(O. Chemistry) To deprive of phlogiston, or the supposed principle of inflammability. — Priestley
Collocations (1)
Dephlogisticated air , oxygen gas; -- so called by Dr. Priestly and others of his time.