American English

Definition of alteration noun from the Oxford Advanced American Dictionary



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  1. 1[countable] a change to something that makes it different major/minor alterations They are making some alterations to the house. an alteration in the baby's heartbeat
  2. 2[uncountable] the act of making a change to something The dress will not need much alteration.
See the Oxford Advanced Learner's Dictionary entry: alteration