Question

what is necrosis in biology

Answer 1

Necrosis (from the Greek νέκρωσις "death, the stage of dying, the act of killing" from νεκρός "dead") is a form of cell injury which results in the premature death of cells in living tissue by autolysis.[1]

Necrosis is caused by factors external to the cell or tissue, such as infection, toxins, or trauma which result in the unregulated digestion of cell components.

Answer 2

Necrosis is the death of most or all of the cells in an organ or tissue due to disease, injury, or failure of the blood supply.

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