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, fullyqualified 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.

(1997-12-26)