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preview +‎ -er


previewer (plural previewers)

  1. A person who has been invited to preview a film or TV program.
  2. One who, or that which, previews.
    • 1988, Institute for Scientific Information, The Scientist: Volume 2, Issues 1-12
      For example, the Macintosh versions of TeX provide a screen previewer as a part of the basic package, whereas the screen previewer for the IBM PC is an extra.
    • Jim Boyce, Microsoft® Outlook® 2010 Inside Out
      To view a file for which there is no previewer installed, save the file to disk and open it with the appropriate application.