Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun appendix

2 senses of appendix

Sense 1
appendix -- (supplementary material that is collected and appended at the back of a book)
       => addendum, supplement, postscript -- (textual matter that is added onto a publication; usually at the end)

Sense 2
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)
       => process, outgrowth, appendage -- (a natural prolongation or projection from a part of an organism either animal or plant; "a bony process")