(1) A characteristic of an object that controls which programs can access the object. See also system domain object, user domain object.
(2) A set of systems that allocate shared network resources within a single logical system.
(3) In communications, the network resources under control of a particular system services control point (SSCP).
(4) In TCP/IP, a named set of hosts. Each domain has authority for the machines within that domain, but not for machines in other domains.
(5) In a database, the set of valid values for an attribute.
(6) A logical grouping of resources in a network for the purpose of common management and administration.
(7) In the Internet, a part of a naming hierarchy in which the domain name consists of a sequence of names (labels) separated by periods (dots).
(8) A part of a network that is administered as a unit with a common protocol.
(9) A functionally isolated area of the CICS system that owns resources to which it has sole access and that communicates with other parts of CICS through strictly defined interfaces called gates.