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  1. an improved component or replacement item, usually applied to technology
    verb (upgrad, ing)
    1. to improve, usually applied to technology, generally by complete replacement of one or more components
    2. to replace an existing object with something better
    3. (computing) to replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name
      Etymology: From up + grade.

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