[ak-sesh-uh n]


verb (used with object)

to make a record of (a book, painting, etc.) in the order of acquisition.
to acquire (a book, painting, etc.), especially for a permanent collection.

Nearby words

  1. access road,
  2. access time,
  3. accessary,
  4. accessibility,
  5. accessible,
  6. accession number,
  7. accessorial,
  8. accessorius,
  9. accessorize,
  10. accessory

Origin of accession

1580–90; < Latin accessiōn- (stem of accessiō) an approach, addition. See access, -ion

Related formsac·ces·sion·al, adjectivenon·ac·ces·sion, nounre·ac·ces·sion, nounun·ac·ces·sion·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for accession

British Dictionary definitions for accession



the act of entering upon or attaining to an office, right, condition, etc
an increase due to an addition
an addition, as to a collection
property law
  1. an addition to land or property by natural increase or improvement
  2. the owner's right to the increased value of such land
international law the formal acceptance of a convention or treaty
agreement; consent
a less common word for access (def. 2)


(tr) to make a record of (additions to a collection)
Derived Formsaccessional, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for accession



"act of coming to a position," especially of a throne, 1640s, from Latin accessionem (nominative accessio) "a going to, joining, increase," noun of action from past participle stem of accedere (see accede).

Online Etymology Dictionary, © 2010 Douglas Harper