Definition of term:: Unopened

  • A book with signatures which have never been cut as opposed to untrimmed and uneven (see "Uncut"); unopened books retain the folds of the original gathering and contain many pages which cannot be read without first opening the pages with a knife. Some collectors prefer an unopened book because it indicates that the book has never been read; other collectors who read their books would rather not have the task of cutting open pages and risking tears and jagged leaf edges.
Source: What bookdealers really mean. A dictionary by Tom Congalton and Dan Gregory (Between the Covers), with additions from other sources