Dictionary definition(s) for: upgrade

• n., A new or better version of some hardware or software computer technology.
• v., To develop or install a new or better version of some hardware or software computer technology.
  See Also:

  • conversion
  • transformative migration
• v., To raise (something esp. equipment or facilities) from one grade to another; to improve or enhance physically.
  [ General Dictionaries - Oxford English Dictionary ]
  Oxford English Dictionary. 2nd ed. New York: Oxford University Press, 1989.