from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The natural death of cells or tissues through aging, as distinguished from necrosis or pathological death.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The normal death of cells or tissues because of age-related changes.
from the GNU version of the Collaborative International Dictionary of English
- n. The death of a part of an organism by molecular disintegration and without loss of continuity, as in the processes of degeneration and atrophy; a normal dying out of cells in a tissue, in contrast to
from The Century Dictionary and Cyclopedia
- n. In pathology, degenerative progress toward and ending in the death of a portion of tissue.
- n. In biology, the doctrine or opinion that living beings may arise from decomposing organic matter: contrasted with the opinion that they may be spontaneously generated from inorganic matter.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (physiology) the normal degeneration and death of living cells (as in various epithelial cells)
Sorry, no etymologies found.
I wonder if you have heard of a condition called necrobiosis lipoidica diabeticorum?
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