I. ik-ˈse-shən, ak- noun
Date: 1588
1.
a. : increase by something added
b. : acquisition of additional property (as by growth or increase of existing property)
2. : something added : acquisition
3. : the act of assenting or agreeing
4.
a. : the act of becoming joined : adherence
b. : the act by which one nation becomes party to an agreement already in force between other powers
5.
a. : an act of coming near or to : approach , admittance
b. : the act of coming to high office or a position of honor or power
her accession to power
6. : a sudden fit or outburst : access
• ac·ces·sion·al -ˈsesh-nəl, -ˈse-shə-n ə l adjective
II. transitive verb
Date: 1892
: to record in order of acquisition