title: Ageing (disambiguation)
text: # Ageing (disambiguation)
  
  Aging is the effect of time on a person.
  
  Aging or ageing may also refer to:
  
  ## Biology
  
  * Senescence, the biological effect of time on an organism
     * Aging in cats
     * Aging in dogs
  
  ## Demography
  
  * Population ageing, a shift in the distribution of a population towards older ages
  
  ## Chemistry and materials science
  
  * Polymer degradation, a change of polymer properties due to environmental factors
  * Precipitation hardening, a heat treatment of materials
  * Ostwald ripening, precipitate or deposit aging in chemistry
  * Ageing (textiles), after treatment of textiles
  
  ## Food preparation
  
  * Aging (food), the leaving of a product to improve its flavor
     * Aging of wine, the effect of time on wine
     * Barrel aging, a method of maturing wine, spirits, etc.
     * Beef aging, a process of preparing beef for consumption
     * Cheese ripening, a process in cheesemaking
  
  ## Computers
  
  * Aging (file system), a tendency towards data fragmentation in file systems
  * Aging (scheduling), an operating system technique for resource allocation
  * Software aging, the tendency of software to exhibit problems as time passes by
  
  ## Other uses
  
  * Aging (artwork), a process by which an artwork is made to appear old
  * Aging (journal), a medical journal
  