The power that a principal has expressly conferred upon an agent or any power that is incidental or necessary to carry out the express power of the agency. This power may be broad, general power or it may be limited, special power.
With reference to an agent or representative. The limits of the power the agent or representative has to bind her principal to an agreement or to a statement.
In the law of agency, such authority as a principal intentionally confers on the agent, or intentionally allows the agent to believe himself to possess; includes both express and implied authority.