n., pl., -da (-də).
Something added or to be added, especially a supplement to a book.
[Latin, neuter gerundive of addere, to add. See add.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
