Source : Webster's Revised Unabridged Dictionary (1913)

Purulent \Pu"ru*lent\, a. [L. purulentus, fr. pus, puris, pus,
   matter: cf. F. purulent. See {Pus}.] (Med.)
   Consisting of pus, or matter; partaking of the nature of pus;
   attended with suppuration; as, purulent inflammation.

Source : WordNet®

purulent
     adj : having undergone infection; "a purulent  wound" [syn: {infected},
            {pussy}, {putrid}]