from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The physiological process by which cells physically degrade due to age

from The Century Dictionary and Cyclopedia

  • n. In physiology, that property of living substance which enables it to make adjoining cells or structures develop adaptively or in harmony with itself.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. normal aging of cells


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