noun (n)

• the localized death of living cells (as from infection or the interruption of blood supply)(noun.phenomenon)

  Synonym:
  gangrene, mortification, sphacelus
  

  source: wordnet30
• Mortification or gangrene of bone, or the death of a bone or portion of a bone in mass, as opposed to its death by molecular disintegration. See Caries.(noun)

  source: webster1913