appendix

noun
ap·​pen·​dix | \ ə-ˈpen-diks How to pronounce appendix (audio) \
plural appendixes or appendices\ -​də-​ˌsēz How to pronounce appendices (audio) \

Definition of appendix

1a : 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

Keep scrolling for more

Synonyms & Antonyms for appendix

Synonyms

addendum, afterword, codicil, excursus, supplement

Antonyms

foreword, introduction, preface, prologue (also prolog)

Visit the Thesaurus for More 

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

The Blindspot actress, 33, shared a photo on Twitter Friday of herself resting in a hospital bed after her appendix had ruptured. Alexia Fernandez, PEOPLE.com, "Blindspot Star Jaimie Alexander In Hospital After Her Appendix Ruptured," 9 Mar. 2018 Legions of diseased tissue had been found all the way up to my spleen and appendix, which was so overtaken by scar tissue that it, too, had been taken out. Leah Campbell, Glamour, "I Lost My Fertility at 26," 23 Apr. 2019 Wayne Taylor said his son woke up with a pain in his side and had his appendix removed Monday night. Jenna Fryer, The Seattle Times, "IMSA points leader Jordan Taylor to race after appendectomy," 12 Apr. 2019 The condition has long been thought to be a medical emergency because of the risk for a burst appendix, which can be life-threatening. Fox News, "Pills for appendicitis? Surgery often not needed, study says," 25 Sep. 2018 Technical writers write technical materials such as equipment manuals, appendices, or operating and maintenance instructions. USA TODAY, "Women in the workforce: 20 jobs that have become dominated by women," 21 Mar. 2018 The pain often builds and builds until the appendix ruptures. Korin Miller, SELF, "HGTV 'Home Town' Star Erin Napier Had an Undiagnosed Perforated Appendix for Years," 22 Oct. 2018 The results from Finland contradict decades of thinking about the best way to treat an inflamed appendix. Fox News, "Pills for appendicitis? Surgery often not needed, study says," 25 Sep. 2018 Three technical appendices cover the geological time scale, the durations and rates of earthly phenomena, and the history of Earth’s environmental crises, including five mass extinctions. Robert M. Thorson, WSJ, "‘Timefulness’ Review: Thinking in Eons," 30 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'appendix.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of appendix

1542, in the meaning defined at sense 1a

History and Etymology for appendix

Latin appendic-, appendix, from appendere — see append

Keep scrolling for more

Keep scrolling for more

More Definitions for appendix

appendix

noun

English Language Learners Definition of appendix

: a section of extra information added at the end of a book
: a small tube at the beginning of the large intestine that can be removed by surgery if it becomes infected

appendix

noun
ap·​pen·​dix | \ ə-ˈpen-diks How to pronounce appendix (audio) \
plural appendixes or appendices\ -​də-​ˌsēz \

Kids Definition of appendix

1 : a part of a book giving added and helpful information (as notes or tables)
2 : a small tubelike part growing out from the large intestine

appendix

noun
ap·​pen·​dix | \ ə-ˈpen-diks How to pronounce appendix (audio) \
plural appendixes or appendices\ -​də-​ˌsēz How to pronounce appendices (audio) \

Medical Definition of appendix

: a bodily outgrowth or process specifically : vermiform appendix

Keep scrolling for more

Comments on appendix

What made you want to look up appendix? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

one that collects or salvages junk

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!