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 accession (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 This week, thousands of youths have taken to the streets in N’Djamena and other cities, calling the unconstitutional accession of the younger Mr. Déby, a 37-year-old military commander, a military coup. Benoit Faucon And Joe Parkinson, WSJ, "Strongman’s Death Spotlights Complexity of Africa’s Desert Wars," 29 Apr. 2021 Buckingham Palace is busy planning her platinum jubilee, a four-day celebration in June 2022 to mark the 70 years since her accession to the throne. Mark Landler, New York Times, "Prince Philip’s Death Adds New Urgency to U.K. Monarchy’s Transition Plans," 26 Apr. 2021 Stephanie Miller, the director of military accession policy, told reporters there is no data yet on how many people that may be. Time, "Reversing Trump, Pentagon Releases Inclusive New Transgender Policies," 1 Apr. 2021 Stephanie Miller, director of military accession policy at the Defense Department, said Wednesday about 2,200 service members have been diagnosed with gender dysphoria. NBC News, "Biden admin scraps Trump's restrictions on transgender troops," 31 Mar. 2021 At the head of it all reigns the deceptively ordinary but astonishingly admirable Queen Elizabeth II, who observed the 69th anniversary of her accession to the throne last week. Conrad Black, National Review, "The Royal Family Has Weathered Worse Crises Than Meghan and Harry," 10 Mar. 2021 Understanding this and the important concept of how accession to wealth can create taxable income may help to clear up the confusion. Amber Gray-fenner, Forbes, "IRS Adds New Guidance But Form 1040 Cryptocurrency Question Is Still Causing Confusion," 5 Mar. 2021 Krivokapic has promised to abide by NATO membership obligations and to work on speeding up EU accession, despite demands from his own coalition for closer ties with Slavic allies Serbia and Russia. Predrag Milic, Star Tribune, "Montenegro's parliament approves new, pro-Serb government," 4 Dec. 2020 Kosovo tagged Bosnia with tariffs after the latter blocked Kosovo’s accession to Interpol. Seth Mandel, Washington Examiner, "Overcoming history," 10 Dec. 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

2 May 2021

Cite this Entry

“Accession.” Dictionary, Merriam-Webster, Accessed 7 May. 2021.

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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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