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English definition of “alteration”

alteration

noun uk   /ˌɒl.təˈreɪ.ʃən/ us    /ˌɑːl.t̬ə-/
C1 [C] a change, usually a slight change, in the appearance, character, or structure of something: Several police officers are being questioned about the alteration of the documents. The house needed extensive alterations when we moved in. Some alterations to our original plans might be necessary. [C or U] a change or changes made to the size or shape of a piece of clothing so that it fits better: She's getting some alterations done to her dress. C1 [U] the process of changing something: The landscape has undergone considerable alteration.
(Definition of alteration from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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