From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :
XML eXtensible Markup Language (WWW, XML, W3C)From The Free On-line Dictionary of Computing (30 December 2018) :
Extensible Markup Language XML(XML) An initiative from the W3C defining an "extremely simple" dialect of SGML suitable for use on the web. http://w3.org/XML/)">(http://w3.org/XML/). [Relationship to the XSL forthcoming subset of DSSSL?] (1997-11-20)