- Addendum
In the plural, both the
Latin "addenda" and the English adaptation "addendums" are acceptable.Books
In a book, an "addendum" (sometimes referred to as an "appendix") is a supplemental addition to a given main work. It may correct errors, explain inconsistencies or otherwise detail or update the information found in the main work, especially if any such problems were detected too late to correct the main work. For example, the main work could have had already been printed and the cost of destroying the batch and reprinting is deemed too high. As such, addenda may come in many forms — a separate letter included with the work,
text file s on a digital medium, or any similar carrier.Addenda can also be used in fictional works to give more detailed information about an idea, history, or technology when incorporating the information into the main text would either slow the story or take away from the author's main idea. Examples of this are found in "
The Lord of the Rings " byJ.R.R. Tolkien , where the addenda are used to give histories of the characters and nations involved. "Day of the Cheetah " byDale Brown uses the appendix to explain its fictional technologies in greater detail. In "The Handmaid's Tale " byMargaret Atwood , the appendix presents aframe story , set far in the future from the main body of the novel. A majority ofUrsula K. LeGuin 'spost-apocalyptic book "Always Coming Home " is formed of appendices: songs, legends, recipes, maps, and so on. Addenda of this sort seem particularly prevalent inscience fiction , because there is a lot to explain. TheFlashman series of pseudo-memoirs depend on addenda masquerading asfootnotes to place the fiction within its historic context.Contracts
In other documents, most importantly in
contracts , an addendum is an additional text not included in the main text which may contain additional specifications, provisions, standard forms or other information, especially pricing information. A contract addendum is identical to a contract appendix (addendum is used more commonly)..Schedules andExhibits are sub-categories of addenda, with schedules being related to "numerical and time information" such as pricing and time-schedules, and "exhibits" used for examples of "standard forms and different types of evidence or models".Engineering
The addendum is the height by which a tooth of a
gear projects beyond (outside for external, or inside for internal) the standardpitch circle orpitch line ; also, the radial distance between the pitch circle and theaddendum circle .ee also
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Appendix
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