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 The bloc has already suspended Turkish accession negotiations, and most member states imposed an arms embargo over Ankara’s military operations in Syria. Nikos Chrysoloras,, "EU to Sanction Turkish Nationals Over Gas Drilling Off Cyprus," 10 May 2020 Other branches of the military have already offered cyber warriors steep bonuses to re-enlist and the Army has even created a direct accession program in cyber warfare. Monica M. Ruiz, Wired, "To Bolster Cybersecurity, the US Should Look to Estonia," 14 Feb. 2020 Bulgaria, Latvia, Croatia, Lithuania, Romania, and Greece—and one, Serbia, is on the EU accession list. Annabelle Timsit, Quartz, "European countries lost their best and brightest after the debt crisis. Now they want them back," 5 Feb. 2020 The acrimony has halted negotiations on a bid for EU membership by Turkey, which has been seeking to join the bloc since the 1980s and began accession talks in 2005. Jonathan Stearns,, "EU Walks Turkey Tightrope With Limited Sanctions on Drilling," 8 May 2020 The nonprofit sector flourished during Mr. Erdogan’s first decade in power from 2002, as Turkey was pursuing peace with the Kurds and instituting reforms to further its accession to the European Union. New York Times, "From Prominent Turkish Philanthropist to Political Prisoner," 9 Apr. 2020 In 1952, Queen Elizabeth II proclaimed her accession to the British throne following the death of her father, King George VI., "This day in history," 8 Feb. 2020 This change comes eight months after India revoked Article 370 of the constitution which granted the erstwhile state considerable autonomy within the country—an arrangement put in place at the time of its accession to India in 1947. Riyaz Wani, Quartz India, "India’s new domicile law for Jammu & Kashmir is making residents anxious," 6 Apr. 2020 Sweden’s accession to the European Union in 1995 also played a part. New York Times, "Finland, ‘Prepper Nation of the Nordics,’ Isn’t Worried About Masks," 5 Apr. 2020 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

27 May 2020

Cite this Entry

“Accession.” Dictionary, Merriam-Webster, Accessed 5 Jun. 2020.

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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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