ac·​ces·​sion | \ ik-ˈse-shən How to pronounce accession (audio) , ak- \

Definition of accession

 (Entry 1 of 2)

1a : the act or process by which someone rises to a position of honor or power the accession of a new queen a politician's accession to power Queen Victoria's accession to the throne/crown occurred in 1837.
b : an act of coming near or to something : approach, admittance
2 : something added : acquisition the museum's latest accessions
3a : increase by something added
b : acquisition of additional property (as by growth or increase of existing property)
4 : the act of assenting or agreeing
5a : the act of becoming joined : adherence
b : the act by which one nation becomes party to an agreement already in force between other powers
6 : a sudden fit or outburst : access


accessioned; accessioning; accessions

Definition of accession (Entry 2 of 2)

transitive verb

: to record in order of acquisition Each book in the library had been carefully accessioned.

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Other Words from accession


accessional \ ik-​ˈsesh-​nəl How to pronounce accessional (audio) , -​ˈse-​shə-​nᵊl , ak-​ \ adjective

Synonyms for accession

Synonyms: Noun

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Examples of accession in a Sentence

Noun the accession of Queen Elizabeth II an exhibit of the museum's latest accessions
Recent Examples on the Web: Noun And Chinese influence over Italy’s port infrastructure goes much deeper than the port investments announced as part of the BRI-accession process that Italy completed last April. Christopher R. O'dea, National Review, "Mike Pompeo’s View of China," 7 Nov. 2019 With his wife, Empress Masako, seated on an adjacent pavilion (the michodai) proclaimed his accession to the throne and offered a personal pledge to the nation. Peter Mikelbank,, "Japan Celebrates Emperor Naruhito’s Enthronement with the Ultimate Royal Guest List!," 22 Oct. 2019 The overwhelming majority wanted to open accession talks with North Macedonia and Albania., "Premier Giuseppe Conte of Italy said the failure to open the EU enlargement process ‘‘will be remembered as an historic error.’’," 19 Oct. 2019 Another factor to consider, Ryder argues, is that 7 out of the 14 nations—including DR Congo, CAR, and Benin—opposed China’s accession to the United Nations in 1971. Abdi Latif Dahir, Quartz Africa, "These are the African countries not signed to China’s Belt and Road project," 30 Sep. 2019 Following Brown’s accession into second place with 2,777 yards, only 41 yards and one last hurdle remained in the quest to be the greatest Blazer of all time. Evan Dudley, al, "Spencer Brown sets UAB’s all-time rushing record in loss at Western Kentucky," 29 Sep. 2019 Djukanovic led Montenegro to independence from much-larger Serbia in 2006 and was behind last year’s accession into NATO, which Slavic ally Russia strongly opposed. Washington Post, "Montenegro’s Djukanovic wins presidency, avoids runoff," 16 Apr. 2018 Another part of the Indian Constitution that stems from [Article] 370 is [Presidential Order] 35A, and is part of the condition of accession [and part of 370]. Isaac Chotiner, The New Yorker, "A Kashmiri Novelist on a State Under Siege," 16 Aug. 2019 Since her accession to the throne, Catherine had exerted increasing pressure on Poland, practically turning it into a Russian protectorate. National Geographic, "This 'pretender princess' tried to steal Catherine the Great's throne," 6 Aug. 2019 Recent Examples on the Web: Verb The National Gallery accessioned some 8,300 works, including pieces by Albert Bierstadt, Frederic Edwin Church, Edward Hopper and Jenny Holzer, transforming its holdings of American and contemporary art and photography. Peggy Mcglone, Washington Post, "Art from the Corcoran reestablishes its place in D.C. with exhibition at AU," 6 Sep. 2019 The artworks that brought in the huge sums at Christie’s were being de-accessioned by the Fujita Museum in Osaka, Japan. Graham Bowley, New York Times, "Surprising Sale at Christie’s Lifts Asia Week New York," 21 Mar. 2017

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


1551, in the meaning defined at sense 3a


1887, in the meaning defined above

History and Etymology for accession


borrowed from Middle French & Latin; Middle French accession "acquisition, increase" (Old French also "attack of an illness"), borrowed from Latin accessiōn-, accessiō "approach, onset, paroxysm, addition, accessory," from accēdere "to approach" + -tiōn-, -tiō, suffix of action nouns — more at accede


derivative of accession entry 1

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Time Traveler for accession

Time Traveler

The first known use of accession was in 1551

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Statistics for accession

Last Updated

12 Nov 2019

Cite this Entry

“Accession.” The Dictionary, Merriam-Webster Inc., Accessed 9 December 2019.

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More Definitions for accession


ac·​ces·​sion | \ ak-ˈse-shən How to pronounce accession (audio) \

Kids Definition of accession

: the rise to a position of power accession to the throne


ac·​ces·​sion | \ ik-ˈse-shən, ak- How to pronounce accession (audio) \

Legal Definition of accession

1 : increase by something added specifically : the mode of acquiring property by which the owner of property (as a building, land, or cattle) becomes the owner of an addition by growth, improvement, increase, or labor
2 : the act of assenting or agreeing

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