isr.co.ro : glossary Domain In general, a named portion of the Internet or other network under the control of a single person or organization. Depending on the context, it can mean one of the major hierarchies in the main Internet Domain Name System (DNS) addressing method used as the last element in Net addresses--such as the ".com" in "netguide.com." It might also mean the specific name assigned to a company or a firm by the appropriate naming authority--as in the name "netguide.com" assigned to us by InterNIC. Or it can mean the name of a specific host on the Net, such as "rtfm.mit.edu," which is a name the Massachusetts Institute of Technology gave to one computer under its control. Technically, you can say a domain is a point in a logical hierarchy and all the elements under it. In computer searching, a limited or defined set of information that will be searched with the current query. As applied to expert systems, agents, droids, and other autonomous or semi-autonomous programs, a defined area of knowledge or experience, particularly one that would provide a useful sphere of action or advice if mastered by a computer system.