Source : Webster's Revised Unabridged Dictionary (1913)

Oxygenate \Ox"y*gen*ate\, v. t. [imp. & p. p. {Oxygenated}; p.
   pr. & vb. n. {Oxygenating}.] [Cf. F. oxyg['e]ner.] (Chem.)
   To unite, or cause to combine, with oxygen; to treat with
   oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).

Source : WordNet®

oxygenate
     v : impregnate, combine, or supply with oxygen; "oxygenate
         blood" [syn: {oxygenize}, {oxygenise}, {aerate}]