[1] : The Collaborative International Dictionary of English v.0.48

age \age\, v. i. imp.  p. p. aged; p. pr.  vb. n. aging.
   to grow aged; to become old; to show marks of age; as, he
   grew fat as he aged.
   1913 webster

         they live one hundred and thirty years, and never age
         for all that.                            --holland.
   1913 webster

         i am aging; that is, i have a whitish, or rather a
         light-colored, hair here and there.      --landor.
   1913 webster
see also:
aged aging 

[2] : The Collaborative International Dictionary of English v.0.48

aging \ag"ing\, n.
   the process by which objects or materials acquire desirable
   qualities by being left undisturbed for some time under
   specific conditions. it is used mostly for foods snd
   beverages, but also for other materials. also spelled
   ageing.
   wordnet 1.5 +pjc
see also:
ageing 

[3] : WordNet (r) 2.0

aging
     adj : growing old syn: ageing, senescent
     n 1: the organic process of growing older and showing the effects
          of increasing age syn: ageing, senescence
     2: acquiring desirable qualities by being left undisturbed for
        some time syn: ripening, ageing
see also:
ageing senescent senescence ripening 

Aging >> A Words
Aging, definition of term: Aging
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