Pronunciation: (fōld'out"), [key]
a page larger than the trim size of a magazine or book, folded one or more times so as not to extend beyond the pages; gatefold.
that must be unfolded to be used, read, viewed, etc.: a cabinet with a foldout table. Also,fold'-out".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.