Hyper Text Transfer Protocol

HTTP – Hypertext Transfer Protocol

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HTTP 

The   Hypertext   Transfer    Protocol   (HTTP)   is   an
application-level      protocol      for     distributed,
collaborative,  hypermedia information  systems. It  is a
generic, stateless,  protocol which can be  used for many
tasks beyond its use  for hypertext, such as name servers
and   distributed  object  management   systems,  through
extension  of  its   request  methods,  error  codes  and
headers. A feature of  HTTP is the typing and negotiation
of  data  representation, allowing  systems  to be  built
independently of the data being transferred.

source : http://www.w3.org/Protocols/Specs.html