dot com

from WordNet (r) 3.0 (2006)

dot com
    n 1: a company that operates its business primarily on the
         internet using a URL that ends in `.com' [syn: {dot-com},
         {dot com}, {dot com company}]

from The Free On-line Dictionary of Computing (8 July 2008)

com
.com
dot com

   <networking> (.com, "commercial") The {top-level domain}
   originally for American companies but, since the explosion of
   the {World-Wide Web}, used by most companies and for {vanity
   domains} of all types, whether in the US or not, often in
   addition to {country code} domains like amazon.co.uk.

   The term "dot com" is now widely used to refer to any Internet
   business as in "My dot com turned into a dot bomb".

   (2007-02-18)