(mathematics) A branch of mathematics that studies special kinds of partially ordered sets (posets) commonly called domains.

plural of domain hack

(Internet, informal) An Internet domain name in which the top-level domain (such as a country code) can be understood as part of the name rather than the usual suffix.

(biology) A part of protein sequence and structure that can evolve, function, and exist independently of the rest of the protein chain.

(algebra, ring theory) Any nonzero commutative ring in which the product of nonzero elements is nonzero.

plural of domain name

A Noetherian ring which is also an integral domain.

(algebra, ring theory) An integral domain in which every proper ideal factors into a product of prime ideals which is unique (up to permutations).

(computing) A more general name for business logic. (The logic could run in an organisation that is not a business.)

(algebra) an integral domain in which division with remainder is possible