A collection of supplementary materials, usually appearing at the end of a report, proposal, or book. Plural: appendixes or appendices.
From the Latin, "hang upon"
- "A final, optional component is an appendix. Appendices allow you to include any additional information (survey resuilts, tables, figures, previous report findings, relevant letters or memos, etc.) that you have not built into your proposal's main text.
"The contents of your proposal should not be of primary importance. Any truly important information should be be incorporated within the proposal's main text. Valuable data (proof, substantiation, or information that clarifies a point) should appear in the text where it is easily accessible. Information provided within an appendix is buried, simply because of its placement at the end of the report. You don't want to bury key ideas. An appendix is a perfect place to file nonessential data that provides documentation for future reference."
(Sharon Gerson and Steven Gerson, Technical Writing: Process and Product. Pearson, 2006)
- "An appendix contains supporting materials for the report--tables and charts too long to include in the discussion, sample questionnaires, budgets and cost estimates, correspondence about the preparation of the report, case histories, transcripts of telephone conversations."
(Philip C. Kolin, Successful Writing at Work. Houghton Mifflin, 2007)