Technology terms starting with X

69 terms

  1. X Windows A system developed at MIT that allows applications to be displayed in windows and shared among different workstations and terminals.
  2. X Windows/Motif ARC/INFO and ArcView operate in the X Windows/Motif environment on all supported UNIX workstation platforms.
  3. X-bits Unassigned overhead bits. Transmitters should code these bits as zeros while receivers are required to be capable of ignoring the value contained in these…
  4. X-dimension of recorded spot In facsimile systems, the effective recorded spot dimension measured in the direction of the recorded line.
  5. X-dimension of scanning spot In facsimile systems, the distance between the centers of adjacent scanning spots measured in the direction of the scanning line on the object.
  6. X-header User-defined, unofficial header field that exists in the message header. X-headers are not specifically mentioned in RFC 2822, but the use of an undefined…
  7. X-ON/X-OFF Transmitter On/Transmitter Off (Telecomm/Computer term).
  8. X-Open Consortium An association of American and European vendors formed in 1984 to promote open systems.
  9. X-Ray Laser (XRL) A laser that generates a beam or beams of x-rays. Also called an "X- raser ."
  10. X-Rays The part of the electromagnetic spectrum whose radiation has much greater frequencies and smaller wavelengths than those of ultraviolet radiation.
  11. x-y mount Synonym altazimuth mount.
  12. X.-series Recommendations Sets of data telecommunications protocols and interfaces defined by CCITT (now, ITU-T) Recommendations. Note: Some of the more common X.
  13. X.25 A standard protocol for data communications.
  14. X.400 ISO standard for electronic mail.
  15. X.400 Connector An Exchange component that is integrated with the message transfer agent (MTA) and can be configured to connect routing groups within Exchange, or to…
  16. X.400 Recommendations Defines the standard interfaces of an electronic messaging system. These recommendations specify the structure of a message handling system, message…
  17. X.400 transport stack Networking software required to support X.400 server-to-server message transport. [Exchange 5.5]
  18. X.500 A set of standards defining a distributed directory service, developed by the International Standards Organization (ISO).
  19. X.509 Certificate The International Organization for Standardization/International Telecommunication Union Standardization Department (ISO/ITU-T) X.
  20. X.509 Public Key Certificate The public key for a user (or device) and a name for the user (or device), together with some other information, rendered unforgeable by the digital…
  21. X.75 Gateway Service A protocol for network interworking which supports communication between adjacent networks and communication thru transit networks.
  22. x86 architecture a computer hardware platform based on the Intel family architecture begun with the 8086 and continuing to the Pentium and later families.
  23. Xalan XSLT stylesheet processor. For more information, see http://xml.apache.org/xalan-j/
  24. XBR X-Band Radar.
  25. XCVR Transceiver.
  26. XDS Exoatmospheric Defense System.
  27. Xen Xen is an open source implementation of virtualization that is freely available at www.xensource.com.
  28. Xenu A software tool to check broken links.
  29. Xenu Link Sleuth Popular free software for checking a site for broken internal or external links and creating a sitemap. See also: Xenu - official site
  30. Xerces Advanced parsing. For more information, see http://xerces.apache.org/xerces-j/.
  31. xerographic recording Recording enabled by the scanning action of an optical beam on a photoconducting surface on which an electrostatically charged latent image is developed…
  32. XGA Extended Graphics Array.
  33. XHTML An XML look-alike for HTML defined by one of several XHTML DTDs. To use XHTML for everything would of course defeat the purpose of XML, because the idea…
  34. Xindice Native XML database. For more information, see http://xml.apache.org/xindice/.
  35. XIWT Cross Industry Working Team.
  36. XLink The part of the XLL specification that is concerned with specifying links between documents.
  37. XLL The XML Link Language specification, consisting of XLink and XPointer.
  38. XML See Extensible Markup Language.
  39. XML (Extensible Markup Language) A markup language that enables users to tag data in order to delimit it, leaving the interpretation of the data to the applications that read it.
  40. XML Path Language (XPath) XPath is a language for finding information in an XML document. XPath is used to navigate through elements and attributes in an XML document.
  41. XML registry See registry.
  42. XML Schema The W3C specification for defining the structure, content, and semantics of XML documents.
  43. XML searching The ability to search into XML structures, including hierarchical content structures. Industry standards for XML searching includes XPath and XQuery.
  44. XML-APIs For more information, see http://www.apache.org.
  45. XML-RPC For more information, see http://www.apache.org.
  46. XML::DB Provides an XML persistance layer using the postgresql database. For more information, see http://xmldb.sourceforge.net/.
  47. XMLSec For more information, see http://www.apache.org.
  48. XMTR/CVR Transmitter/Receiver.
  49. XO Executive Officer.
  50. XoDis Exoatmospheric Discrimination.
  51. XOFF An abbreviation for the ASCII transmission-control character meaning "Transmitter off."
  52. XON An abbreviation for the ASCII transmission-control character meaning "Transmitter on."
  53. XOX Assistant Deputy Chief of Staff for Operations (Office Code).
  54. XPath An addressing mechanism for identifying the parts of an XML document.
  55. XPath (XML Path Language) A language that uniquely identifies or addresses parts of a source XML document.
  56. XPG3 An X/Open software standard for UNIX Operating Systems. IBM provides a cshell variable named PSALLOC to make AIX XPG3-compliant, resulting in adding more…
  57. XPointer The part of the XLL specification that is concerned with identifying sections of documents so that they can be referenced in links or included in other…
  58. XRL See X-Ray Laser.
  59. XRS USAF/ESC Staff Symbol.
  60. XS An extraordinarily exported, expeditiously excellent, expressly eXternal Subroutine, executed in existing C or C++ or in an exciting new extension…
  61. XSL Extensible Stylesheet Language. A standard that lets you do the following:
  62. XSL-FO A subcomponent of XSL used for describing font sizes, page layouts, and how information flows from one page to another.
  63. XSLT XSL Transformations. An XML document that controls the transformation of an XML document into another XML document or HTML.
  64. XSLTC A compiling version of XSLT.
  65. XSUB An external "subroutine" defined in "XS".
  66. XT Abbreviation for crosstalk.
  67. XTB Exoatmospheric Test Bed.
  68. XTV Experimental Test Vehicle.
  69. Xwindows Unix graphics interface.