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domain

1. In the theory of functions, the set of argument values for which a function is defined.

See domain theory.

2. 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. 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)