addendum
[uh-den-duh m]
- a thing to be added; an addition.
- an appendix to a book.
- Machinery.
- the radial distance between the tip of a gear tooth and the pitch circle of a gear or the pitch line of a rack.Compare dedendum.
- Also called addendum circle.an imaginary circle touching the tips of the teeth on a gear.
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Origin of addendum
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words
postscript, appendix, codicil, extension, extra, addition, adjunct, supplement, augmentation, attachment, appendage, riderExamples from the Web for addendum
Contemporary Examples
When Sisley released a photo of the addendum, taken by a friend in the legislature, reporters flooded Biggs with questions.
Hopefully you could include it as an addendum if not actually include it within the article itself.
That felt like cheating, I imagined my own reaction to reading a book and then finding such an addendum at the end.
Mike Brown had noted that the names of the women who were pregnant have an addendum, “and her unborn child.”
An addendum to this story comes from the aforementioned “best friend” decorator, John Wiltgen.
Historical Examples
Natalenko re-read the addendum, pursed his thick lips and sighed.
Lone Star PlanetHenry Beam Piper and John Joseph McGuire
He offered no addendum to the revelation he had made to Kurt.
Penny of Top Hill TrailBelle Kanaris Maniates
It is not an addendum or an excrescence: it is an actual part of the fabric of life itself.
Spirit and MusicH. Ernest Hunt
But the addendum—that he didn't cass any fiss—betrayed her inexperience.
Somehow GoodWilliam de Morgan
His formidable eye supplied the addendum, "And you leave the room!"
The Prodigal FatherJ. Storer Clouston
addendum
- something added; an addition
- a supplement or appendix to a book, magazine, etc
- the radial distance between the major and pitch cylinders of an external screw thread
- the radial distance between the pitch circle and tip of a gear tooth
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Word Origin
C18: from Latin, literally: a thing to be added, neuter gerundive of addere to add
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for addendum
n.
1794, literally "something added," from Latin addendum, neuter of addendus "that which is to be added," gerundive of addere (see add (v.)). Classical plural form is addenda.
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Online Etymology Dictionary, © 2010 Douglas Harper