Xerography An electrophotographic copying process that uses a corona charged photoconductor surface, electrostatic forces, and dry or liquid toner to form an image.

XML (eXtensible Mark-up Language) A more powerful markup language than the previously popular HTML. XML allows designers and programmers to create tags that can do almost anything they want, hence the term "extensible." XML was created so that richly structured documents could be used over the Web.