Source : Webster's Revised Unabridged Dictionary (1913)

Oxidate \Ox"i*date\, v. t. [imp. & p. p. {Oxidated}; p. pr. &
   vb. n. {Oxidating}.] [Cf. f. oxyder. See {Oxide}.] (Chem.)
   To oxidize. [Obs.]

Source : WordNet®

oxidate
     v 1: enter into a combination with oxygen or become converted
          into an oxide; "This metal oxidizes easily" [syn: {oxidise},
           {oxidize}]
     2: add oxygen to or combine with oxygen [syn: {oxidize}, {oxidise}]
        [ant: {deoxidize}, {deoxidize}]