1. Supplementary material that is collected and appended at the back of a book, article or document
   "The appendix contained additional data tables and graphs"
    
2. A vestigial process that extends from the lower end of the caecum and that resembles a small pouch
   "Inflammation of the vermiform appendix is known as appendicitis"; "The cecal appendage, commonly known as the appendix, can become inflamed, leading to appendicitis";
   - vermiform appendix, vermiform process, cecal appendage

Derived forms: appendices, appendixes

Type of: addendum, appendage, outgrowth, postscript, process, supplement

Part of: blind gut, caecum [Brit, Cdn], cecum [N. Amer]

Encyclopedia: Appendix