asd is the sequence of 3 letters on keyboards of many countries (europe).
In netgaming asd is often used as a spammy word that doesnt really mean nothing 8
billy ate zio's granade
billy: lol!
zio: asdasdasd :D
billy: asd
by m4tt August 28, 2004
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Autism Spectrum Disorder

Autism spectrum or autistic spectrum describes a range of conditions classified as neurodevelopmental disorders in the fifth revision of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders 5th edition (DSM-5). The DSM-5, published in 2013, redefined the autism spectrum to encompass the previous (DSM-IV-TR) diagnoses of autism, Asperger syndrome, pervasive developmental disorder not otherwise specified (PDD-NOS), and childhood disintegrative disorder. Features of these disorders include social deficits and communication difficulties, stereotyped or repetitive behaviors and interests, sensory issues, and in some cases, cognitive delays.

Autism forms the core of the autism spectrum disorders. Asperger syndrome is closest to autism in signs and likely causes;4 unlike autism, people with Asperger syndrome have no significant delay in language development, according to the older DSM-4 criteria.5 PDD-NOS is diagnosed when the criteria are not met for a more specific disorder. Some sources also include Rett syndrome and childhood disintegrative disorder, which share several signs with autism but may have unrelated causes; other sources differentiate them from ASD, but group all of the above conditions into the pervasive developmental disorders.46

From Wikipedia.
by Someonethatdied April 29, 2016
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When you have no idea what to type.
by Hagey October 1, 2017
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1. A spam word that doesn't mean anything, but more than often typed in a spamming frenzy.
2. American Sign-language for the Deaf.
Ritifo has taken the Blood Eagle flag!
Ritifo: li3k pmfg i pwn j00 guys!
Dispose introduces Ritifo to the spinfusor.
Dispose: LoL.
Ritifo: OMG HAXER!!1
Ritifo: asdasf
Ritifo: dfdsf
Ritifo: asd
by Ritifo January 23, 2005
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Random typing on european keyboards. Mostly used during period of total frenziness while chatting with friends.
Ayu: ... and it fell from the stairs. :D
Tal: LOL!
Ayu: ahahah such an idiot
Aki: XD
Tal: lool
Tal: dghmsrkgjesjfkmsrkfemafs
Aki: kiyumnrgdsdcds
Ayu: selkfwjfhrwjfekfsrlkfe
Tal: gfksritrkiw

...and so on
by Taliesin_the_Evildragoon June 5, 2005
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- Crushridge World of Warcraft server (EU)

A: lol
B: asd
C: Stupid Italian
by Dutchy April 24, 2005
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army selca day - the first tuesday of every month in which bts fans posts a picture of themselves and a bts member using the hashtag #ArmySelcaDay. the post usually has a concept but it doesn’t have to.
army 1: i don’t know what the concept for my next ASD will be..
army 2: do anything with the color yellow !!
by busanskm March 5, 2018
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