(algebra) An integral domain which has a subset whose elements are said to be "positive", such that this subset is closed under addition, closed under multiplication, and all elements of the integral domain satisfy a law of trichotomy; namely, that either that element is in the said subset, or it is the zero (additive identity), or its product with −1 (the additive inverse of the multiplicative identity) belongs to the said subset.

An annual observance on January 1 of when copyrights expire and works enter into the public domain. Copyrights usually expire every year on January 1 based on the individual copyright laws of each country.

(computing, Internet) The last component of a domain name, such as .com, .edu, .gov, .net, .org, .mil, .mobi or any of the newer generic top-level domains, or any of the ccTLDs. Abbreviated TLD.

(computing, Internet) The distributed database, sometimes including all the supporting hardware or software infrastructure, the Internet uses to translate hostnames into IP addresses and provide other domain-related information.

(computing, Internet) A domain that is immediately subordinate to a top-level domain (whose name appears after it, with a period separating the two).

(computing, Internet) A service provided by the Domain Name System, allowing domain names to be resolved to IP addresses.

(computing, Internet) A computer that provides domain name information to a network; a computer that is part of the Domain Name System.

plural of unique factorization domain

plural of domain-specific language

plural of ordered integral domain