Definition of GML in English:

GML

noun

Computing
  • Generalized Mark-up Language, a precursor of SGML and HTML, in which the mark-up specifies the function or structure of an area of text (such as chapter, heading level, etc.), not its visual formatting.

noun

Computing
  • Geographic (or Geography) Mark-up Language, a format of XML used for the display and transmission of geographic information.

Origin

1970s; earliest use found in untitled<br>early 21st century.