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 Trustees asked that an addendum to the current sheriff’s contract be prepared for action at their Oct. 5 meeting. Sue Kiesewetter, The Enquirer, 23 Sep. 2021 The Alaska Department of Health and Social Services enabled crisis standards of care Wednesday through a new addendum to the state’s existing COVID-19 public health order, officials announced at a press briefing. Zaz Hollander, Anchorage Daily News, 22 Sep. 2021 The book’s addendum explains more about each animal: that the huge ears of the fennec fox can be half the length of its body; that adult male gorillas thump their chests to warn away younger ones; that octopuses have indeed not one heart but three. Meghan Cox Gurdon, WSJ, 6 Aug. 2021 But the initiative also included adopting a lease addendum that said if a tenant or one of their guests was arrested for a crime — even if no conviction followed — everyone living in the unit could be forced out. Desiree Stennett,, 20 May 2021 In Alaska, the state’s crisis care activation is being enacted with an addendum to an existing COVID-19 emergency order. Zaz Hollander, Anchorage Daily News, 22 Sep. 2021 In an 88-page addendum to the report, a sports media firm estimated that the women’s tournament alone could be worth more than $100 million a year beginning in 2025, when the current deal expires. Alan Blinder, New York Times, 3 Aug. 2021 However, two of the five board members voted against the new contract, along with an addendum to Magyar’s existing contract. Bob Sandrick, cleveland, 27 Apr. 2021 One of the reasons the City Council used for its denial was an addendum prepared by the applicant after the Planning Commission’s approval. Phil Diehl, San Diego Union-Tribune, 18 Aug. 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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Dictionary Entries Near addendum



addendum circle

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Statistics for addendum

Last Updated

15 Oct 2021

Cite this Entry

“Addendum.” Dictionary, Merriam-Webster, Accessed 15 Oct. 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)

More from Merriam-Webster on addendum

Nglish: Translation of addendum for Spanish Speakers

Britannica English: Translation of addendum for Arabic Speakers


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