- a body of separate additional material at the end of a book, magazine, etc, esp one that is documentary or explanatory
- any part that is dependent or supplementary in nature or function; appendage
- See vermiform appendix
WordReference Random House Learner's Dictionary of American English © 2026
ap•pen•dix /əˈpɛndɪks/USA pronunciation
n. [countable], pl. -dix•es, -di•ces
WordReference Random House Unabridged Dictionary of American English © 2026- /-dəˌsiz/.USA pronunciation
- additional or extra material at the end of a text:An appendix to the grammar table lists all the place names that take "the'' in English, like "United States''.
- any additional or extra part;
appendage. - Anatomyan outgrowth on the large intestine, shaped like a worm. See -pend-.
ap•pen•dix
(ə pen′diks),USA pronunciation n., pl. -dix•es, -di•ces
-
(-də sēz′).USA pronunciation
- supplementary material at the end of a book, article, document, or other text, usually of an explanatory, statistical, or bibliographic nature.
- an appendage.
- Anatomy
- a process or projection.
- See vermiform appendix.
- [Aeron.]the short tube at the bottom of a balloon bag, by which the intake and release of buoyant gas is controlled.
- Latin: appendage, equivalent. to append(ere) to append + -ix (equivalent. to -ic- noun, nominal suffix + -s nominative singular ending)
- 1535–45
- 1. addendum, adjunct. 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.
- 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.
Collins Concise English Dictionary © HarperCollins Publishers::
appendix /əˈpɛndɪks/ n ( pl -dices /-dɪˌsiːz/, -dixes)
'appendix' also found in these entries (note: many are not synonyms or translations):
addendum
- Apocrypha
- appendicectomy
- appendicitis
- codicil
- grumbling appendix
- penthouse
- see
- vermiform appendix
- addition
- adjunct
- annex
- app
- append
- appendectomy
- appendiceal
- appendicle
- apx.
- capsule
- cross index
- excursus
- mesoappendix
- preface
- vermiform process
- schedule
- supplement