accession

Etymology

Ultimately from Latin accessiō, from accēdō (English accede). Cognate to French accession. First attested in 1646.

noun

1. A coming to; the act of acceding and becoming joined.
   a king's accession to a confederacy
2. Increase by something added; that which is added; augmentation from without.
   1803, John Browne Cutting, “A Succinct History of Jamaica” in Robert Charles Dallas, The History of the Maroons, London: Longman and Rees, Volume 1, p. xli, […] armed vessels being provided, their crews were soon recruited by accessions from the needy or adventurous, the discontented or the bold.
3. (law) A mode of acquiring property, by which the owner of a corporeal substance which receives an addition by growth, or by labor, has a right to the part or thing added, or the improvement (provided the thing is not changed into a different species).
4. (law) The act by which one power becomes party to engagements already in force between other powers.
5. The act of coming to or reaching a throne, an office, or dignity.
   her accession to the throne
   This is the 6 ft. 4-6-0 engine No. 8301, Springbok, the second design produced by Mr. Edward Thompson since his accession to office as Chief Mechanical Engineer. 1943 March and April, “L.N.E.R. New Mixed-Traffic 4-6-0 Locomotive”, in Railway Magazine, page 104
   Charles will be formally proclaimed King at a historic Accession Council in an ancient ceremony at St James’s Palace on Saturday, it has been announced. 2022-09-09, Caroline Davies, “Charles to be proclaimed King at St James’s Palace on Saturday”, in The Guardian
6. (medicine) The invasion, approach, or commencement of a disease; a fit or paroxysm.
7. Agreement.
8. Access; admittance.
9. A group of plants of the same species collected at a single location, often held in genebanks.
10. (Scotland) Complicity, concurrence or assent in some action.

verb

1. (transitive) To make a record of (additions to a collection).