Ac*ces"sion (?), n. [L. accessio,
fr. accedere: cf. F. accession. See Accede.]
1. A coming to; the act of acceding and becoming
joined; as, a king's accession to a confederacy.
2. Increase by something added; that which is
added; augmentation from without; as, an accession of wealth or
territory.
The only accession which the Roman empire received
was the province of Britain.
Gibbon.
3. (Law) (a) 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). Thus, the owner of a cow becomes the owner of her
calf. (b) The act by which one power becomes
party to engagements already in force between other powers.
Kent.
4. The act of coming to or reaching a throne, an
office, or dignity; as, the accession of the house of Stuart; --
applied especially to the epoch of a new dynasty.
5. (Med.) The invasion, approach, or
commencement of a disease; a fit or paroxysm.
Syn. -- Increase; addition; augmentation; enlargement.