noun
Refers to a book in digital format, typically read on a computer or dedicated device. In modern Japanese, 電子書籍 is more common for e-books, but デジタルブック is still used, especially in contexts emphasizing the digital medium over print.
このデジタルブックはスマホでも読めます。
You can read this digital book on your smartphone too.
Variant with interpunct, sometimes seen in titles or formal contexts.
電子書籍 is the standard term for e-books in Japanese, while デジタルブック is a less common loanword that may sound slightly more technical or marketing-oriented.
Loanword from English 'digital book'.