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.
Origin of foldout
First recorded in 1945–50; noun, adj. use of verb phrase fold out
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for fold-out
Contemporary Examples of fold-out
I saw two fold-out seats used by flight attendants during takeoff, landing and turbulence.The National-Security Diaper Scramble
April 25, 2013
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
Online Etymology Dictionary, © 2010 Douglas Harper