noun

• That which represents something else.
• The act of representing.
• (law) The lawyers and staff who argue on behalf of another in court.
• (politics) The ability to elect a representative to speak on one's behalf in government; the role of this representative in government.
• (mathematics) An object that describes an abstract group in terms of linear transformations of vector spaces; (more formally) a homomorphism from a group on a vector space to the general linear group (group of all bijective linear transformations) on the space.
• A figure, image or idea that substitutes reality.
• A theatrical performance.
• A statement; a presentation of opinion or position, or an utterance made to influence the opinions or actions of others
• (medicine) An act of representing, i.e. presenting again.