necro-, necr-, necron-, -necrosis, nekro- +
(Greek: dead, death, dead body; dead tissue or cells; corpse)
2. Death, or mortification; especially, of a bodily tissue, as a result of the loss of blood supply, corrosion, burning, etc.
The causes of necrosis include insufficient blood supply, but also, other physical agents; such as, trauma, or radiant energy (electricity, infrared, ultraviolet, roentgen, and radium rays); chemical agents acting locally, acting internally following absorption, or placed into the wrong tissue; such as, some medicines cause necrosis if injected into the tissues rather than the vein, and iron dextran (injectable form of iron used in the prevention of iron deficiency) causes necrosis if injected into areas other than the deep muscle or vein.
2. The dissection of a cadaver.