appendix Meaning, Definition & Usage

  1. noun supplementary material that is collected and appended at the back of a book
  2. noun a vestigial process that extends from the lower end of the cecum and that resembles a small pouch
    cecal appendage; vermiform process; vermiform appendix.

WordNet

Ap*pen"dix noun
Etymology
L. appendix, -dicis, fr. appendere. See Append.
Wordforms
plural E Appendixes L Appendices
Definitions
  1. Something appended or added; an appendage, adjunct, or concomitant.
    Normandy became an appendix to England. Sir M. Hale.
  2. Any literary matter added to a book, but not necessarily essential to its completeness, and thus distinguished from supplement, which is intended to supply deficiencies and correct inaccuracies. Syn. -- See Supplement.

Webster 1913