appendix
noun
ap·pen·dix
ə-ˈpen-diks 
plural appendixes or appendices
ə-ˈpen-də-ˌsēz
1
a
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
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
No one plans on having their appendix burst or having a heart attack.
—
Dené K. Dryden, Twin Cities, 20 Feb. 2025
Despite his success, the demands of Avicii’s career took a toll on his well-being: The hitmaker had a series of health problems over the years, including a bout with acute pancreatitis and surgery to have his gallbladder and appendix removed.
—Lynsey Eidell, People.com, 31 Dec. 2024
The other appendices state that Kier started working at a very young age and suffered extensive abuse from his employer.
—Ben Travers, IndieWire, 7 Feb. 2025
Lévêque was 9 years old when her appendix was removed by the surgeon.
—Linda Hervieux, NBC News, 23 Feb. 2025
See All Example Sentences for appendix
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Dené K. Dryden, Twin Cities, 20 Feb. 2025
Despite his success, the demands of Avicii’s career took a toll on his well-being: The hitmaker had a series of health problems over the years, including a bout with acute pancreatitis and surgery to have his gallbladder and appendix removed.
—Lynsey Eidell, People.com, 31 Dec. 2024
The other appendices state that Kier started working at a very young age and suffered extensive abuse from his employer.
—Ben Travers, IndieWire, 7 Feb. 2025
Lévêque was 9 years old when her appendix was removed by the surgeon.
—Linda Hervieux, NBC News, 23 Feb. 2025
See All Example Sentences for appendix
Cite this Entry
“Appendix.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/appendix. Accessed 16 Apr. 2025.
Copy CitationKids 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
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