noun (n)

• (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus(noun.process)

  Synonym:
  festering, maturation
  

  source: wordnet30
• a fluid product of inflammation(noun.body)

  Synonym:
  festering, ichor, purulence, pus, sanies
  

  source: wordnet30
• The act or process of suppurating.(noun)

  source: webster1913