domain

      See also Domain

      English

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      Etymology

      From Middle English demeine, demain (“rule”), Old French demeine, demaine, demeigne, domaine (“power”), (French domaine), from Latin dominium (“property, right of ownership”), from dominus (“master, proprietor, owner”). See dame, and confer demain, danger, dungeon.

      Pronunciation

      Noun

      domain (plural domains)

      1. A geographic area owned or controlled by a single person or organization.
        The king ruled his domain harshly.
      2. A sphere of influence.
        Dealing with complaints isn't really my domain: get in touch with customer services.
      3. A group of related items, topics, or subjects.
        • 2012 January 1, Michael Riordan, “Tackling Infinity”, American Scientist, volume 100, number 1, page 86: 
          Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity, have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging infinities has probably occupied far more effort than was spent in originating the theories.
      4. (mathematics) The set of all possible mathematical entities (points) where a given function is defined.
      5. (mathematics) A ring with no zero divisors; that is, in which no product of nonzero elements is zero.
      6. (mathematics, topology, analysis) An open and connected set in some topology. For example, the interval (0,1) as a subset of the real numbers.
      7. (computing, Internet) Any DNS domain name, particularly one which has been delegated and has become representative of the delegated domain name and its subdomains
        • 2000, BIND 9 Administrator Reference Manual (9.3.2), Internet Software Consortium [1]
          Every name in the DNS tree is a domain, even if it is terminal, that is, has no subdomains.
      8. (computing, Internet) A collection of DNS or DNS-like domain names consisting of a delegated domain name and all its subdomains
      9. (computing) A collection of information having to do with a domain, the computers named in the domain, and the network on which the computers named in the domain reside
      10. (computing) The collection of computers identified by a domain's domain names
      11. (computing) A small magnetized area of a bubble memory storing one bit, a bubble.
      12. (biology, taxonomy) In the three-domain system, the highest rank in the classification of organisms, above kingdom; in other taxonomic systems, a similarly high rank
      13. (biology, taxonomy) In the three-domain system, one of three taxa at that rank: Bacteria, Archaea, or Eukaryota.
      14. (biochemistry) A folded section of a protein molecule that has a discrete function

      Usage notes

      • (collection of information): Used in a context in which domain name services, or domain name like services, are managed in a fashion that is integrated with the management of other computer and network related information.
      • (collection of computers): Used in the same context as the collection of information domain sense.

      Synonyms

      • (where a function is defined): domain of definition
      • (collection of DNS names): domain name, hostname

      Antonyms

      • (domain of definition of a function): range
      • (domain of definition of a function): codomain

      Derived terms

      Related terms

      Translations

      geographic area
      sphere of influence
      group of related items
      (mathematics) the set on which a function is defined
      (mathematics) ring with no zero divisors
      (mathematics) an open and connected set
      DNS domain name
      collection of DNS domain names
      collection of information
      collection of computers
      highest-level grouping of organisms
      The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
      Translations to be checked

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      Last modified on 19 June 2013, at 21:04