Source : Webster's Revised Unabridged Dictionary (1913)

Suppurate \Sup"pu*rate\, v. i. [imp. & p. p. {Suppurated}; p.
   pr. & vb. n. {Suppurating}.] [L. suppuratus, p. p. of
   suppurare to suppurate, cause to suppurate; sub under + pus,
   puris, matter. See {Pus}.]
   To generate pus; as, a boil or abscess suppurates.

Suppurate \Sup"pu*rate\, v. t.
   To cause to generate pus; as, to suppurate a sore.
   --Arbuthnot.

Source : WordNet®

suppurate
     v 1: cause to ripen and discharge pus; "The oil suppurates the
          pustules" [syn: {mature}]
     2: ripen and generate pus; "her wounds are festering" [syn: {fester},
         {maturate}]