Multiple choice general knowledge science & technology What is XML short for? eXtensive Markup Language eXtensive Markup List eXtension Markup List eXtensible Markup Language Reveal answer Fill a bubble to check yourself D Correct answer Explanation XML stands for eXtensible Markup Language, not eXtensive. The name reflects its core design principle - it allows users to define their own custom markup tags, making it 'extensible' rather than being an extensive set of predefined tags.