Accession refers to the general idea of joining or adding to. It may also refer to:
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Accession (property law)
Accession has different definitions depending upon its application.
In property law, it is a mode of acquiring property that involves the addition of value to property through labour or the addition of new materials. For example, a person who ...
* Accession, the act of joining a treaty by a party that did not take part in its negotiations; see
Vienna Convention on the Law of Treaties#Signature, ratification and accession
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Ratification
Ratification is a principal's approval of an act of its agent that lacked the authority to bind the principal legally. Ratification defines the international act in which a state indicates its consent to be bound to a treaty if the parties inte ...
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EU Accession
The European Union (EU) has expanded a number of times throughout its history by way of the accession of new member states to the Union. To join the EU, a state needs to fulfil economic and political conditions called the Copenhagen criteria ...
* Accession to the throne; not to be confused with the later ceremony of
Coronation
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Enthronement
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Accession day, when an heir becomes monarch, and its anniversary
* Accession to elected office;
inauguration
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Accession number (disambiguation) Accession number may refer to:
* Accession number (bioinformatics), a unique identifier given to a biological polymer sequence (DNA, protein) when it is submitted to a sequence database
* Accession number (library science), the unique number ...
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Accession number (cultural property)
In libraries, art galleries, museums and archives, an accession number is a unique identifier assigned to, and achieving initial control of, each acquisition. Assignment of accession numbers typically occurs at the point of accessioning or catalog ...
, a catalogue number assigned to an object when it becomes part of a library or museum collection
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Accession number (bioinformatics)
An accession number, in bioinformatics, is a unique identifier given to a DNA or protein sequence record to allow for tracking of different versions of that sequence record and the associated sequence over time in a single data repository. Becaus ...
, a unique identifier given to a biological polymer sequence (DNA, protein) when it is submitted to a sequence database
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Accession (''Star Trek: Deep Space Nine'')
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Accession Records, a record label created by Adrian Hates
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Instrument of Accession, a legal document introduced in 1935, used in 1947 to enable the rulers of the princely states formerly in British India to join India or Pakistan
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Instrument of Accession (Jammu and Kashmir), by which that state joined the Dominion of India (1947)
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Accession Day (Jammu and Kashmir), a public holiday
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