procuration

noun

1. (countable, uncountable)The act of procuring; procurement.

   “For she was not only publicly contracted, but stated as a bride, and solemnly bedded, and after she was laid, there came in Maximilian's ambassador with letters of procuration”

2. (countable, uncountable)The management of another's affairs.
3. (countable, uncountable)The instrument by which a person is empowered to transact the affairs of another; a proxy.
4. (countable, uncountable)A sum of money formerly paid to the bishop or archdeacon, by an incumbent, as a commutation for entertainment at the time of visitation; called also proxy.