E-book (noun)

1. A book that is in digital format and can be read on a computer or other electronic device.
2. A digital version of a printed book that can be read on a computer or handheld device.
3. A book that is available in an electronic format and can be read on a variety of devices.

Origin:

1990s: from electronic + book.

Examples:

1. He downloaded an e-book from the library's website to read on his tablet.
2. E-books are becoming more and more popular as they are cheaper and more convenient to buy and store.
3. The e-book had interactive features, such as videos and quizzes.
4. She prefered e-books over physical books, as they were easily searchable and lightweight.
5. The e-book format allowed for easy access to the book from any device, anywhere.