Depends on the Context

DNS Domain#

DNS Domain is a domain within the Domain Name System (DNS)

Domain-Driven Design#

Domain is a sphere of knowledge (ontology), influence, or activity. The subject area to which the user applies a program is the domain of the software.

LDAP ObjectClass Definition#

The ObjectClass Type is defined as:

More Information#

There might be more information for this subject on one of the following: