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alteration

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noun alteration pronunciation in American English /ˌɔltəˈreɪʃ(ə)n/ 
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singularalteration
pluralalterations
  1. 1
    [uncountable] the process of making a change in the appearance or form of something

    Alteration of the apartment without the landlord's permission is forbidden.

    1. a.
      [countable] a change in the appearance or form of something

      The editor made a few minor alterations to the text.

      Have you noticed any alteration in her behavior?

  2. 2
    [countable] a small change made to a piece of clothing to make it fit correctly

    I'm having some alterations made to the dress.

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