XD meaning in Internet ?

Answer: What is LOL mean?

LOL, or lol, is an initialism for laughing out loud and a popular element of Internet slang. It was first used almost exclusively on Usenet, but has since become widespread in other forms of computer-mediated communication and even face-to-face communication. It is one of many initialisms for expressing bodily reactions, in particular laughter, as text, including initialisms for more emphatic expressions of laughter such as LMAO ("laughing my ass off") and ROFL or ROTFL ("rolling on the floor laughing"). Other unrelated expansions include the now mostly obsolete "lots of luck" or "lots of love" used in letter-writing.

The list of acronyms "grows by the month" (said Peter Hershock in 2003), and they are collected along with emoticons and smileys into folk dictionaries that are circulated informally amongst users of Usenet, IRC, and other forms of (textual) computer-mediated communication. These initialisms are controversial, and several authors recommend against their use, either in general or in specific contexts such as business communications.

The Oxford English Dictionary first listed LOL in March, 2011.

reference

Full Form	Category
Experimental Diodes	Academic & Science
eXtra Dry	Business
Xtreme Digital	Business
Experience Design	Business
Mixed Doubles	Computing
Xtreme Duty	General
Xtra Durable	General
Xanthine dehydrogenase	General
Xtra Density	General
Xtra Duty	General
XD Doesn	General
Xtra Dimension	General
Xbox Dog	General
Xtreme Disney	General
extreme digital	General
Cross- Dated	Governmental
Cross-Dresser	Internet
Laughing Face	Internet
Dead Fish	Internet
Extremely Dying	Internet
Extremely Dangerous	Internet
It means really funny	Internet
Xtra-Dude	Internet
LOL	Internet
laughing, as well as an emoticon	Internet
X- Dimensional	Maths
Extra Duty	Military and Defence
Ximian Desktop	Softwares
Xml Draw	Softwares
Extra Damage	Sports
Ex-dividend	Stock Exchange