A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

XA	A protocol that enables CD-ROMs to play audio and video simultaneously.
X-files	Popular television program based on the premise of bizarre unsolved cases in the FBI's files. So, if they stand for "unsolved" cases, why aren't they called the U-files? See Lone Gunmen.
XGA	EXtended Graphics Array. An IBM video display standard that extended VGA to 132-column text and interlaced 1024x768x256 resolution.