- appendix - supplementary material that is collected and appended at the back of a book
--1 is a kind of addendum, supplement, postscript
--1 has particulars: shirttail; codicil- appendix, vermiform appendix, vermiform process, cecal appendage - a vestigial process that extends from the lower end of the cecum and that resembles a small pouch
--2 is a kind of process, outgrowth, appendage
--2 is a part of cecum, caecum, blind gut - appendix, vermiform appendix, vermiform process, cecal appendage - a vestigial process that extends from the lower end of the cecum and that resembles a small pouch