: an edition (as of a book) incorporating major revisions by the author or an editor and often supplementary matter designed to bring it up to date — compare reissue, reprint.

What is a revised version of a book?

A revised book is one that's been changed since the previously published version. The reasons for revising a book may vary. Sometimes the author learns more about the topic and wants to add that to the original content. Alternatively, corrections and updates might make the revision necessary.

How do you write a revised edition?

For numbered editions, use the abbreviation for the ordinal number that applies (1st, 2nd, 3rd, etc.), then add "ed." For a revised edition, use the abbreviations "Rev. ed." Include edition information in parenthesis, and insert it between the book title and its following period, without underlining.