Definitions for "Back matter"
The material printed at the back of a book (e.g., agenda, appendix, bibliography, glossary, index, etc.). Alternative term: end matter.
Printed material found in the back of the book after the main section of the book. This includes the appendix, the bibliography, the index and other related matter.
appendices, notes, indexes or other material which may appear in a book after the conclusion of the text.