Domain
1. <mathematics> In the theory of functions, the set of argument values for which a
function is defined.
See
domain theory.
2. <networking> A group of computers whose hostnames share a common suffix, the "domain name".
The last component of this is the
top-level domain.
See
administrative domain,
Domain Name System,
fully qualified domain name.
3. Distributed Operating Multi Access Interactive Network.
4. <programming> A specific phase of the software life cycle in which a developer works.
Domains define developers' and users' areas of responsibility and the scope of possible relationships between products.
5. The subject or market in which a piece of software is designed to work.