aging

aging definition - medical

ag·ing (āˈjĭng)

noun
  1. The process of growing old or maturing.
  2. The gradual changes in the structure of a mature organism that occur normally over time and increase the probability of death.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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