necrosis

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ne·cro·sis / neˈkrōsis/ • n. Med. the death of most or all of the cells in an organ or tissue due to disease, injury, or failure of the blood supply. DERIVATIVES: ne·crot·ic / -ˈkrätik/ adj.

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necrosis The death of cells, which can be caused by a variety of chemicals and toxic substances. It often involves denaturation of proteins and may be preceded by a change in the appearance of cells and their contents (such as swelling of the mitochondria and karyorrhexis) and the appearance of lysosomes. Compare apoptosis.

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necrosis The death of a circumscribed piece of tissue. Necrotic wounds are produced in tobacco plants by infection with the tobacco necrosis virus.

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necrosis (path.) mortification of tissue. XVII. — Gr. nékrōsis state of death, f. nekroûn kill, mortify, f. nekrós; see NECRO-, -OSIS.

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necrosis (mortification) (nek-roh-sis) n. the death of some or all of the cells in an organ or tissue, caused by disease, physical or chemical injury, or interference with the blood supply (see gangrene).
necrotic adj.

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necrosis The death of a circumscribed piece of tissue. Necrotic wounds in mammals are produced, for example, by the bite of Loxosceles reclusa (brown recluse spider).

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necrosis The death of a circumscribed piece of tissue. Necrotic wounds in mammals are produced, for example, by the bite of Loxosceles reclusa (brown recluse spider).

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necrosis Death of plant or animal tissue. It can be caused by disease, injury or interference with the blood supply.