A collection of supplementary material, usually at the end of a book.(noun)
The vermiform appendix.(noun)
Anatomy A supplementary or accessory part of a bodily organ or structure.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "appendix" in a sentence
"Apparently one of the vendor links in the appendix is no longer valid."
"She had no recollection how the injuries were received which injuries are detailed in appendix B."
"Your child will need to stay in the hospital longer — from five to seven days — than someone whose appendix didn't burst, because the bacteria or stool that was inside his appendix is now in his abdomen."