mag·ni·fi·ca·tion 
(măg′nə-fĭ-kāshən)
(măg′nə-fĭ-kāshən)n.
1. The act of magnifying or the state of being magnified.
2.
a. The process of enlarging the size of something, as an optical image.
b. Something that has been magnified; an enlarged representation, image, or model.
3. The ratio of the size of an image to the size of an object.