Definition of term:: Folding plates

  • Plate, map, or chart that is too big to fit into a book, so it has been carefully folded to fit neatly into the book. Be just as careful when you unfold it, or you may end up with twice the number of plates as you started out with.
Source: What bookdealers really mean. A dictionary by Tom Congalton and Dan Gregory (Between the Covers), with additions from other sources