ad·​den·​dum | \ ə-ˈden-dəm How to pronounce addendum (audio) \
plural addenda\ ə-​ˈden-​də How to pronounce addendum (audio) \ also addendums

Definition of addendum

1 : a thing added : addition
2 : a supplement to a book often used in plural but singular in construction

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Synonyms & Antonyms for addendum



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Examples of addendum in a Sentence

Francine du Plessix Gray, in an essay first written in 1991 and updated with an addendum here, writes eloquently of a lifelong obsession with weight loss, stemming from the harsh judgments of a mother enraptured by fashion. — Ginia Bellafante, New York Times Book Review, 21 Sept. 2008 This qualification, however, is not a recent addendum to Derrida's career. In 1990, near the end of the period in which rhetoric and composition had a strong interest in his work, Derrida participated in an editor's interview … in which he characterized his project as fundamentally tied to the tradition it works both within and against. College English, September 2006 The letters are included as an addendum to the biography. there's an addendum from the author to explain certain stylistic choices that she made
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Recent Examples on the Web Newer board members defended Magyar’s performance and approval of the new contract and addendum. Bob Sandrick, cleveland, "Brecksville-Broadview Heights school board votes 3-2 to keep Joelle Magyar as superintendent," 27 Apr. 2021 Trustee Dawn Abernathy was the lone vote against the addendum. James T. Norman,, "Mundelein expanding ‘made for you’ ad campaign, continuing to work with current vendor," 24 Mar. 2021 Tinkle had two years remaining on his contract and received an automatic one-year addendum for making the field. John Canzano, oregonlive, "Canzano: Oregon State must seize NCAA Tournament momentum and reward Wayne Tinkle," 2 Apr. 2021 Any objective case about bitcoin’s energy usage must necessarily feature an addendum that puts such consumption in context and lists the broader benefits of the asset. Lawrence Wintermeyer, Forbes, "Bitcoin’s Energy Consumption Is A Highly Charged Debate – Who’s Right?," 10 Mar. 2021 The analysis was released Monday as an addendum to a report released last fall that suggested Ohio could save up to $264 million a year through bail reform because fewer people would be spending time in jail. Peter Krouse, cleveland, "Longer jail stays pretrial result in greater chance of conviction, Ohio ACLU concludes," 16 Mar. 2021 In previous stops, Triano would list the team’s principles on the whiteboard with an addendum stating that any player who read the board could come into his office to collect $50. New York Times, "Behind the ‘Grind’ of the N.B.A. Team With the Next Big Thing," 10 Feb. 2021 The battery has always been an addendum, a limiting factor, and a parasite. Daniel Oberhaus, Wired, "The Batteries of the Future Are Weightless and Invisible," 6 Nov. 2020 The most recent, a 10th addendum to the eighth emergency health declaration, went into effect on Sept. 21. Mark Dunphy, San Antonio Express-News, "Citations: Market Square business cited for COVID-19 violations," 8 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'addendum.' 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 addendum

1664, in the meaning defined at sense 1

History and Etymology for addendum

borrowed from Latin, neuter of addendus, gerundive of addere "to add"

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Time Traveler for addendum

Time Traveler

The first known use of addendum was in 1664

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Statistics for addendum

Last Updated

30 Apr 2021

Cite this Entry

“Addendum.” Dictionary, Merriam-Webster, Accessed 15 May. 2021.

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More Definitions for addendum



English Language Learners Definition of addendum

: something that is added especially : a section of a book that is added to the main or original text


ad·​den·​dum | \ ə-ˈden-dəm How to pronounce addendum (audio) \
plural addenda\ ə-​ˈden-​də \

Kids Definition of addendum

: something added (as to a book)

Comments on addendum

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