X

xerographic paper:
papers made to reproduce well in copy machines and laser printers.

xerography:
a dry method of reproduction of graphic material in which the image is created in the form of electrostatic charges by reflecting the image onto the surface of a charged photo conductor.

XGA:
abbreviation for eXtended Graphics Array, usually used to refer to a system capable of displaying 24-bit graphics at a resolution of 1024 x 768 pixels.

x-height:
In typography the x-height equals the height of a lowercase letter ‘x’.

XLFD:
abbreviation for X Logical Font Description.

XML:
abbreviation for eXtensible Markup Language, a subset of SGML constituting a particular text markup language for interchange of structured data. XML is a trademark of the WWWC (World Wide Web Consortium). More information can be found on this page.

XON/XOFF:
abbreviation for Transmitter On / Transmitter OFF.

XPS:
abbreviation for XML Paper Specification, a Microsoft alternative to the PDF file format. XPS is a page description language for exchanging documents which preserve their layout and offer good output quality on both the screen and printing devices. More information can be found here.

X-rite:
manufacturer of densitometers and other measuring tools for the graphic arts industry

xtension:
a small module or add-on that adds functionality to the layout program QuarkXPress