al·​ter·​ation | \ ˌȯl-tə-ˈrā-shən How to pronounce alteration (audio) \
plural alterations

Definition of alteration

1 : the act or process of altering something The dress needs alteration for a proper fit. : the state of being altered
2 : the result of changing or altering something: such as
a : a change made in fitting a garment no charge for alterations
b : a change in a legal instrument that alters its legal effect She made some alterations to her will.
c : a mineral that has been altered by a chemical process : metasomatism

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Examples of alteration in a Sentence

the alteration of the pattern They did a good job on the dress alteration. He made alterations in his will.
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Recent Examples on the Web

In the best case scenario, the DWP hopes to be done with alterations by 2028, and the technology, at least on paper, seems possible. David Grossman, Popular Mechanics, "The Hoover Dam Changed America—And It Might Do It Again," 27 July 2018 Some questioned whether the envisioned standards would be too stringent and whether other alterations should be considered. Luke Money,, "Costa Mesa Planning Commission will again review proposed changes to city small-lot ordinance," 29 May 2018 Further Reading Valve changes developer terms to try to retain top games Valve recently announced slight alterations to Steam's revenue sharing terms but only for titles that have made at least $10 million in revenue. Kyle Orland, Ars Technica, "Discord Store to offer developers 90 percent of game revenues," 14 Dec. 2018 Vanessa didn't want to make any grand structural alterations to the existing room (pictured above). Alexandra Mitchell, Country Living, "A Family Room Makeover Where the Before Is Just as Lovely as the After," 11 May 2015 Now, there are a lot of individuals who have variant in the MTHFR gene, meaning that there is some amount of alteration in the DNA sequence that makes up that gene. Tara C. Smith, SELF, "Why You Don't Actually Need to Test for MTHFR Gene Variants," 18 Mar. 2019 Most of these alterations have been positive, making the game feel fresh despite being over a year old, but for some, the last season was disappointing. Patricia Hernandez, The Verge, "Fortnite star Ninja says his biggest challenges in 2018 are the ‘haters’," 31 Oct. 2018 In the middle of the last century, the long gallery had been partitioned into three spaces by architect Sir Albert Richardson as part of a series of alterations. Robert O'byrne, ELLE Decor, "Tour a Legendary Manor in Northern Ireland," 12 Oct. 2018 The unremediated military decline in relation to potential enemies is the cause of a dangerous alteration in doctrine, which in itself is a form of early, if unconscious, appeasement. Mark Helprin, WSJ, "Defining Defense Down," 11 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'alteration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of alteration

14th century, in the meaning defined at sense 1

History and Etymology for alteration

see alter

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Dictionary Entries near alteration








Statistics for alteration

Last Updated

25 May 2019

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Time Traveler for alteration

The first known use of alteration was in the 14th century

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More Definitions for alteration



English Language Learners Definition of alteration

: the act, process, or result of changing or altering something


al·​ter·​ation | \ ˌȯl-tə-ˈrā-shən How to pronounce alteration (audio) \

Kids Definition of alteration

1 : the act or process of changing something She began alteration of the design.
2 : the result of changing : modification a minor alteration

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Comments on alteration

What made you want to look up alteration? Please tell us where you read or heard it (including the quote, if possible).


to speak slightingly about or to degrade

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