|1.||the death of one or more cells in the body, usually within a localized area, as from an interruption of the blood supply to that part|
|2.||death of plant tissue due to disease, frost, etc|
|[C17: New Latin from Greek nekrōsis, from nekroun to kill, from nekros corpse]|
necrosis ne·cro·sis (nə-krō'sĭs, ně-)
n. pl. ne·cro·ses (-sēz')
Death of cells or tissues through injury or disease, especially in a localized area of the body.
|necrosis (nə-krō'sĭs) Pronunciation Key
The death of cells or tissues from severe injury or disease, especially in a localized area of the body. Causes of necrosis include inadequate blood supply (as in infarcted tissue), bacterial infection, traumatic injury, and hyperthermia.
necrotic adjective (nə-krŏt'ĭk)
death of a circumscribed area of plant or animal tissue as a result of an outside agent; natural death of tissue is called necrobiosis. Necrosis may follow a wide variety of injuries, both physical (cuts, burns, bruises) and biological (effects of disease-causing agents). The sign of necrosis-dead tissue-is called a lesion; it is often of diagnostic value. Necrosis is brought about by intracellular enzymes that are activated upon injury and proceed to destroy damaged cells
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