noun A coming to; the act of acceding and becoming joined.
a king's accession to a confederacy
noun Increase by something added; that which is added; augmentation from without. Such augmentation that adds to the collections of a museum or archive; a thing thus added.
noun Such augmentation that adds to the collections of a museum or archive; a thing thus added.
noun 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).
noun The act by which one power becomes party to engagements already in force between other powers.
accession to the European Union
noun The act of coming to or reaching a throne, an office, or dignity.
her accession to the throne
noun The invasion, approach, or commencement of a disease; a fit or paroxysm.