noun \ˌeks-(ˌ)em-ˈel\

: a computer language that is used to clearly mark and organize the different parts of a document so that it can be read on different computer systems

Full Definition of XML

:  a markup language with use and design similar to HTML but employing tags that indicate the logical structure in addition to the display specifications of the coded data

Origin of XML

X (from extensible) + markup language
First Known Use: 1989


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