Definition: x

(1) See X Window and MDI-X port.

(2) For the Twitter rebranding, see X.com and X/Twitter.

(3) (eXit) To exit, close or delete. See X button.

(4) For Qualcomm's system-on-chip, see Snapdragon X.

(5) (heX) A programming symbol that identifies a hexadecimal number. For example, "0x0A" and "\x0A" specify the hex number 0A.

(6) (times the original) A multiplier for virtually anything; for example, 10x means 10 times something. Optical drives use the x for their speed ratings (see CD-ROM drives and DVD drives).

(7) (x-) The prefix used to describe a MIME type; for example, x-pdf and x-gzip refer to PDF and Gnu ZIP file formats, respectively. See MIME type.

(8) (cross) For example, x-platform means "cross-platform." See cross platform.

(9) (Mac OS X) X is the Roman Numeral for 10; thus OS X means "OS 10." See Mac OS X.

(10) (eXperience) See UX designer and user experience.

(11) (X) An Alphabet subsidiary. See Alphabet and X Development.