Extensible Hypertext Markup Language

n. (XHTML, abbr.) A revision of the Hypertext Markup Language standard HTML 4.0 that conforms with the Extensible Markup Language standard XML 1.0.


XHTML defines codes to format and provide limited structure to hypertext or hypermedia documents, especially for the web.


W3C 2004a With a wealth of features, XHTML 1.0 is a reformulation of HTML 4.01 in XML, and combines the strength of HTML 4 with the power of XML. ¶ XHTML 1.0 is the first major change to HTML since HTML 4.0 was released in 1997. It brings the rigor of XML to Web pages and is the keystone in W3C's work to create standards that provide richer Web pages on an ever increasing range of browser platforms including cell phones, televisions, cars, wallet sized wireless communicators, kiosks, and desktops. ¶ XHTML 1.0 is the first step and the HTML Working Group is busy on the next. XHTML 1.0 reformulates HTML as an XML application. This makes it easier to process and easier to maintain. XHTML 1.0 borrows elements and attributes from W3C's earlier work on HTML 4, and can be interpreted by existing browsers, by following a few simple guidelines.