[ nuh-kroh-sis, ne- ]
/ nəˈkroʊ sɪs, nɛ- /
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See synonyms for: necrosis / necrotic on Thesaurus.com


death of a circumscribed portion of animal or plant tissue.



In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
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The rainy weather could not ________ my elated spirits on my graduation day.

Origin of necrosis

First recorded in 1655–65; from New Latin, from Greek nékrōsis “mortification, state of death”; see origin at necr-, -osis
ne·crot·ic [nuh-krot-ik, ne-], /nəˈkrɒt ɪk, nɛ-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
  • I’ve had ultrasounds looking for unexplained swelling, and hip X-rays searching for signs of avascular necrosis—you know, outright pelvic bone death.

  • Necrosis of bone may be the result of any injury, such as severe blows, or pricks and stabs.

    Diseases of the Horse's Foot|Harry Caulton Reeks
  • Necrosis of the bones of the nose may take place, in which case the discharge becomes peculiarly offensive.

    Manual of Surgery|Alexis Thomson and Alexander Miles

British Dictionary definitions for necrosis

/ (nɛˈkrəʊsɪs) /


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
death of plant tissue due to disease, frost, etc
necrotic (nɛˈkrɒtɪk), adjective
C17: New Latin from Greek nekrōsis, from nekroun to kill, from nekros corpse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for necrosis

[ nə-krōsĭs ]

n. pl. ne•cro•ses (-sēz′)

Death of cells or tissues through injury or disease, especially in a localized area of the body.
ne•crotic (-krŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for necrosis

[ nə-krōsĭs ]

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-krŏtĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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