Definition of appendix in English:



  • 1Anatomy
    A tube-shaped sac attached to and opening into the lower end of the large intestine in humans and some other mammals.

    Also called vermiform appendix
    • ‘A programme of testing several thousand pathological specimens of appendixes and tonsils was started.’
    • ‘I found the appendix normal, but next to the appendix there was a caecum which had very strange, greasy patches.’
    • ‘The myenteric plexus of appendices in children older than 3 years had thinner nerve branches and smaller ganglia than the colon specimens of the same age.’
    • ‘The inside of the appendix forms a cul-de-sac that usually opens into the large intestine.’
    • ‘This is a rare tumour that usually affects the appendix or the small intestine.’
  • 2A section or table of additional matter at the end of a book or document.

    • ‘I have reviewed this subject in accordance with my findings in an appendix to a work that I propose to publish when circumstances permit.’
    • ‘In an appendix to Volume 2, the author addresses the question of how people were saved in Old Testament times before the coming of Christ.’
    • ‘In the appendix to the chapter he suggests the standard deviation as a measure of risk.’
    • ‘In recognition of this we include a short appendix to Chapter 3 with some of the relevant elementary mathematics.’
    • ‘Six sections and six appendices comprise the 213 pages of the book.’
    • ‘Oral evidence was given by 27 witnesses whose names and employment are listed in an appendix to this decision.’
    • ‘The link between assessment and practice has been made clearer throughout the book and important documentation formerly in appendices has been placed in the text.’
    • ‘There are two matters which I wish to add by way of an appendix to this judgment.’
    • ‘Below is an appendix to the first essay I'm working on mentioned in the previous post.’
    • ‘A list of categories of classified information was voted as an appendix to the act.’
    • ‘Such lists may be long enough to be documents in their own right or published as works of reference, but most are appendices to books, articles, and dissertations.’
    • ‘These codes were set out in an appendix to the leaflet, as follows.’
    • ‘It is this omission which prompts question 5 as set out in the appendix to this judgment.’
    • ‘Allegations against five other priests were included in an appendix to the report, published on Tuesday.’
    • ‘The final section consists of seven appendices and extensive notes, an absorbing read in themselves.’
    • ‘Those interested in the more arcane hagiographical matters will enjoy the appendices to this readable volume.’
    • ‘His recipe for this amalgam is included as an appendix to the present book.’
    • ‘It is referred to in the appendix to the report, although it is not tabled as such.’
    • ‘The book contains appropriate appendixes, which document the evolutionary improvement of tank formations, and excellent photographs, and maps that adequately depict the war.’
    • ‘The book concludes with detailed appendices, chapter notes, and a glossary.’
    supplement, addendum, postscript, codicil
    addition, extension, continuation, adjunct, appendage
    coda, epilogue, afterword, rider, sequel, tailpiece, back matter
    View synonyms


Appendix typically has the plural appendixes in the anatomical sense, and appendices when referring to a part of a book or document


Mid 16th century ( appendix): from Latin, from appendere hang upon (see append). Sense 1 dates from the early 17th century.