Glossary

Terms starting with X

16 definitions.

X · Legal
An X has been used as a mark that can serve as a substitute for a person's signature, especially for the handicapped or illiterate. An X can also be used to mark on voting ballots, to indicate the voter's choice.
X Rated · Legal
This term refers to an identifying mark or label printed on material to alert the purchaser of adult content.
X rays · Astronomy
electromagnetic radiation more energetic than ultraviolet light but less energetic than gamma rays
X-class flares · Astronomy
the brightest and most energetic type of solar flares
X-RAY · Energy
A type of electromagnetic radiation having low energy levels.
X2 · Computer
A technology developed by U.S. Robotics (now 3COM) for delivering data rates up to 56 Kbps over plain old telephone service (POTS). It was long believed that the maximum data transmission rate over copper telephone wires was 33.6 Kbps, but X2 achieves higher…
Xavier · Food
A cream soup or consommé thickened with arrowroot or rice flour and garnished with diced chicken.
XENON · Energy
A heavy gas used in specialized electric lamps.
XML · Hosting
Extensible Markup Language. A meta-language, abbreviated version of SGML, used to specify other document types used on the Web. Accepted as a format in 1998 to replace dependence on HTML extensions. MSIE 5.5 and Netscape 6 both support XML.
XML (eXtensible Markup Language) · Computer
Like HTML, XML is a markup language, but unlike HTML, it is not limited to Web documents. XML lets Web developers and designers create customized tags that offer greater flexibility in organizing and presenting information than is possible with the older…
XML processor · Hosting
A program that can XML documents and access their content.
XMODEM · Hosting
A file transfer protocol. Rather slow.
XMS · Computer
Stands for Extended Memory Specification, a procedure developed jointly by AST Research, Intel Corporation, Lotus Development, and Microsoft Corporation, for using extended memory and DOS’s high memory area, a 64K block just above 1MB.
XO · Food
XO stands for 'extra old' and is used to show that a cognac has been aged for an extended period of time. The legal minimum for this designation is seven years old but most XO cognacs are much older than that, many ranging from 20 to 50 years old. The…
XYLOID COAL · Energy
Brown coal or lignite mostly derived from wood.
XYY Chromosome Defense · Legal
In some criminal cases, the defendant has argued that his criminal behavior was caused by a genetic abnormality. The specific abnormality is that the male defendant has an extra Y chromosome, which is thought to cause aggressiveness that cannot be…