X

1. In general, an x is used to represent any single digit. For example, you may see Computer Hope and other companies list Microsoft Windows 3.x that indicates Windows 3.1 or Windows 3.11, or Microsoft Windows 9x that means either Windows 95 or Windows 98
2. When referring to a computer CD drive, an X refers to the transfer speed. For example, the original 1X CD-ROM had a speed of 153,600 BPS, this means a 24X has a BPS of 3,686,400 or 153,600 x 24. The higher the number, the faster data is going to be read from the CD drive. See the CD-ROM definition for further information about transfer speeds.
3. In mathematics, an x may be used to represent a times sign. For example, 4 x 4 = 16. The times sign may also be represented as a middle-period (∙) or an asterisk (*).
4. A service found on some IRC networks that allows users to manage the chat rooms, called channels, that they have access to.
5. Abbreviation for X-Windows. See the x command page for further information about this command.

Also see: CD definitions