Definition of appendix noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//əˈpendɪks//
    ; NAmE NAmE//əˈpendɪks//
    (pl. appendices
    BrE BrE//əˈpendɪsiːz//
    ; NAmE NAmE//əˈpendɪsiːz//
    , appendixes
    BrE BrE//əˈpendɪksɪz//
    ; NAmE NAmE//əˈpendɪksɪz//
    Internal anatomy, Parts of a book
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  1. 1 a small bag of tissue that is attached to the large intestine. In humans, the appendix has no clear function. He had to have his appendix out (= removed). See related entries: Internal anatomy
  2. 2a section giving extra information at the end of a book or document Full details are given in Appendix 3. See related entries: Parts of a book
  3. Word Originmid 16th cent. (in sense (2)): from Latin, from appendere ‘hang upon’, from ad- ‘to’ + pendere ‘hang’. Sense (1) dates from the early 17th cent.Extra examples He was taken to hospital with a burst appendix. If the condition is not treated, the appendix can rupture. She might have to have her appendix out.
See the Oxford Advanced American Dictionary entry: appendix