Webster's Revised Unabridged Dictionary · 1913

Appendix

Appendix ({not transcribed}) , noun

[Latin appendix, -dicis, from appendere. See Append.]

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.
3.
(Anatomy) The vermiform appendix.