magnification Definition

1. optics.
A measure of the extent to which an image of an object produced by a lens or optical instrument is enlarged or reduced. Also called power (noun 15).
Example: enlarged by a magnification of seven
2. An appearance enlarged, especially by a stated amount.
3. An enlarged copy of something.

Example: The police studied a magnification of the photo
4. The action or an instance of magnifying (in any sense).

Thesaurus: enlargement, amplification, enhancement, expansion, augmentation, intensification, exaggeration, inflation; Antonym: reduction, diminution.
5. The state of being magnified.