power

Definition 1

General: Ability to cause or prevent an action, make things happen; the discretion to act or not act. Opposite of disability, it differs from a right in that it has no accompanying duties.

Definition 2

Law: (1) Document (instrument) transferring or vesting legal authorization. (2) Ability conferred on a person by law to determine and alter (by his or her own will) the rights, duties, liabilities, and other legal relations, of himself or others.

Definition 3

Mechanics: Rate of doing work, measured in units which express work per unit time such as watt (joules per second).