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the gradual changes in the structure of any organism that occur with the passage of time, that do not result from disease or other gross accidents, and that eventually lead to the increased probability of death as the individual grows older. See also aged and senescence, and see the Atlas on Aging.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


The science concerned with treatment of the aged.
Farlex Partner Medical Dictionary © Farlex 2012


Science concerned with treatment of aged patients.
Medical Dictionary for the Dental Professions © Farlex 2012