follow Dictionary.com

Why is the ninth month called September?

appendix

[uh-pen-diks] /əˈpɛn dɪks/
noun, plural appendixes, appendices
[uh-pen-duh-seez] /əˈpɛn dəˌsiz/ (Show IPA)
1.
supplementary material at the end of a book, article, document, or other text, usually of an explanatory, statistical, or bibliographic nature.
2.
an appendage.
3.
Anatomy.
  1. a process or projection.
  2. vermiform appendix.
4.
Aeronautics. the short tube at the bottom of a balloon bag, by which the intake and release of buoyant gas is controlled.
Origin
1535-1545
1535-45; < Latin: appendage, equivalent to append(ere) to append + -ix (equivalent to -ic- noun suffix + -s nominative singular ending)
Can be confused
appendix, index, supplement (see synonym study at the current entry)
Synonym Study
Appendix, supplement both mean material added at the end of a book. An appendix gives useful additional information, but even without it the rest of the book is complete: In the appendix are forty detailed charts. A supplement, bound in the book or published separately, is given for comparison, as an enhancement, to provide corrections, to present later information, and the like: A yearly supplement is issued.
Usage note
Appendices, a plural borrowed directly from Latin, is sometimes used, especially in scholarly writing, to refer to supplementary material at the end of a book.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for appendixes

appendix

/əˈpɛndɪks/
noun (pl) -dices (-dɪˌsiːz), -dixes
1.
a body of separate additional material at the end of a book, magazine, etc, esp one that is documentary or explanatory
2.
any part that is dependent or supplementary in nature or function; appendage
3.
(anatomy) See vermiform appendix
Word Origin
C16: from Latin: an appendage, from appendere to append
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for appendixes

appendix

n.

1540s, "subjoined addition to a document or book," from Latin appendix "an addition, continuation, something attached," from appendere (see append). Used for "small outgrowth of an internal organ" from 1610s, especially in reference to the vermiform appendix. This sense perhaps from or influenced by French appendix, where the term was in use from 1540s.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
appendixes in Medicine

appendix ap·pen·dix (ə-pěn'dĭks)
n. pl. ap·pen·dix·es or ap·pen·di·ces (-dĭ-sēz')

  1. A supplementary or an accessory part of an organ or a structure of the body.

  2. The vermiform appendix.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
appendixes in Science
appendix
  (ə-pěn'dĭks)   
Plural appendixes or appendices (ə-pěn'-dĭ-sēz')
A tubular projection attached to the cecum of the large intestine and located on the lower right side of the abdomen. Also called vermiform appendix.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
appendixes in Culture

appendix definition


A small saclike organ located at the upper end of the large intestine. The appendix has no known function in present-day humans, but it may have played a role in the digestive system in humans of earlier times. The appendix is also called the vermiform appendix because of its wormlike (“vermiform”) shape.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for appendix

Some English speakers likely know this word

Word Value for appendixes

22
25
Scrabble Words With Friends