- A storage medium analogous to regular paper, except that it can be written upon or refreshed numerous, often millions, of times via electronic means. Such paper may be made of a plastic coated with the proper electronics, and can be used, for instance, in ebooks, newspapers that update their content via satellite, portable signs, or the like. electronic paper may or may not be fully flexible, and/or offer full color images. Its abbreviation is epaper. Also called digital paper.