An e-book, short for electronic book, is a digital version of a book that can be read on various electronic devices such as computers, tablets, smartphones, or dedicated e-book readers like Kindle or Nook. E-books can include text, images, and sometimes interactive elements, and they are typically purchased and downloaded from online stores or libraries. They offer convenience in terms of portability and accessibility, allowing readers to carry and access multiple books without the bulk of physical copies.