appendix

noun

ap·​pen·​dix ə-ˈpen-diks 

plural appendixes or appendices ə-ˈpen-də-ˌsēz 

1

a

: appendage

b

: supplementary material usually attached at the end of a piece of writing

The book's appendix includes a bibliography.

2

: a bodily outgrowth or process

specifically : vermiform appendix

Synonyms

• addendum
• afterword
• codicil
• excursus
• supplement

Examples of appendix in a Sentence

In your textbooks, turn to Appendix 3: Glossary of Terms.

The book has several appendixes.

Recent Examples on the Web

An appendix unsealed Friday that featured a trove of documents related to Twitter's challenge to the warrant and nondisclosure order included a copy of the warrant, authorized by Howell on Jan. 17. —Melissa Quinn, CBS News, 15 Sep. 2023

Appendicitis Yes, this inflammation of the appendix happens to pregnant people, too. —Rebecca Stewart, Parents, 6 Sep. 2023

The report includes an appendix detailing possible funding sources. —Darcy Costello, Baltimore Sun, 30 Aug. 2023

One recent missive spanned 155 pages, including appendices. —Cezary Podkul, ProPublica, 14 Aug. 2023

But the contract that was signed by both sides included a wage table as an appendix, which rolled in the 10% premium pay for firefighter paramedics. —oregonlive, 9 Aug. 2023

Harvard’s director of testing, a man named Henry Dyer, was left to write an appendix on implementation. —David Perry, Washington Post, 27 Apr. 2023

There's even an appendix where Weinersmith provides a kid-friendly primer on the history of Beowulf, its unique language, and the various attempts to translate it for modern readers. —Jennifer Ouellette, Ars Technica, 14 Apr. 2023

In an appendix to his major 1637 treatise, Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth in the Sciences, Descartes introduced a version of analytic geometry, in which algebra is used to solve geometric problems. —Peter Schumer, Smithsonian Magazine, 4 Aug. 2023

See More

Word History

Etymology

Latin appendic-, appendix, from appendere — see append

First Known Use

1542, in the meaning defined at sense 1a

Phrases Containing appendix

• vermiform appendix

• vermiform appendix

Kids Definition

appendix

noun

ap·​pen·​dix ə-ˈpen-diks 

plural appendixes or appendices -də-ˌsēz 

1

: additional material attached at the end of a piece of writing

2

: a small tube that is closed at one end and projects from the pouch marking the beginning of the large intestine in the lower right side of the abdomen

Medical Definition

appendix

noun

ap·​pen·​dix ə-ˈpen-diks 

plural appendixes or appendices -də-ˌsēz 

: a bodily outgrowth or process

specifically : vermiform appendix