Definition & Meaning of "back matter"

What is "back matter"?

Back matter refers to the sections at the end of a book that provide additional information beyond the main content. This can include items like an index, glossary, bibliography, appendices, author notes, or an afterword. Back matter serves to offer further details, references, or resources related to the text and helps readers find more in-depth explanations or background on the book's topics. It is often used in non-fiction and academic books to support the main content.