Necrosis /(nē̇*krō"sĭs)/

Ne·cro·sis

Necrosis

n.
  1. The pathologic death of part of a tissue due to irreversible damage. Contrast to necrobiosis, which is a normal death of cells in a tissue. Formerly, applied primarily to death of bone tissue. (Med.)
  2. A disease of trees, in which the branches gradually dry up from the bark to the center. (Bot.)