WordNet (r) 3.0 (2006):

HTTP
    n 1: a protocol (utilizing TCP) to transfer hypertext requests
         and information between servers and browsers [syn:
         hypertext transfer protocol, HTTP]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

HTTP
       HyperText Transfer Protocol (WWW, RFC 2068/2616)


The Free On-line Dictionary of Computing (30 December 2018):

Hypertext Transfer Protocol
HTTP

    (HTTP) The client-server TCP/IP protocol used
   on the web for the exchange of HTML documents.
   It conventionally uses port 80.

   See also Uniform Resource Locator.

   (1994-10-27)