proxy

noun

One appointed or authorized to act for another, especially a person appointed to vote as one wishes at a meeting.

noun

The authority to act for another.

noun

The written authorization to act in place of another.

noun

An entity or variable used to model or generate data assumed to resemble the data associated with another entity or variable that is typically more difficult to research.

noun

The agency of a substitute; the office or authority of one who is deputed to act for another.

noun

One who is deputed to represent or act for another; a deputy.

noun

A document authorizing one person to act as substitute or deputy for another; a written authorization to exercise the powers and prerogatives of others.

noun

That which takes the place of something else; a substitute.

noun

Eccles., same as procuration, 4.