For the noun: appendix
Plural form: appendices

WordReference Random House Learner's Dictionary of American English © 2017
ap•pen•dix /əˈpɛndɪks/USA pronunciation   n.[countable]pl.  -dix•es, -di•ces 
    /-dəˌsiz/.USA pronunciation  
  1. 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''.
  2. any additional or extra part;
  3. Anatomyan outgrowth on the large intestine, shaped like a worm. See -pend-.

WordReference Random House Unabridged Dictionary of American English © 2017
ap•pen•dix  (ə pendiks),USA pronunciation n., pl.  -dix•es, -di•ces 
    (-də sēz′).USA pronunciation 
  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
    • a process or projection.
    • See  vermiform appendix. 
  4. [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.See corresponding entry in Unabridged 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)
  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. See vermiform appendix
Etymology: 16th Century: from Latin: an appendage, from appendere to append

'appendix' also found in these entries:

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