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English definition of “alteration”

alteration

noun     /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.Change and changes [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.Change and changes C1 [U] the process of changing something: The landscape has undergone considerable alteration.Change and changes
(Definition of alteration noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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