domain
     n 1: a particular environment or walk of life; "his social sphere
          is limited"; "it was a closed area of employment"; "he's
          out of my orbit" [syn: {sphere}, {area}, {orbit}, {field},
           {arena}]
     2: territory over which rule or control is exercised; "his
        domain extended into Europe"; "he made it the law of the
        land" [syn: {demesne}, {land}]
     3: the set of values of the independent variable for which a
        function is defined
     4: people in general; especially a distinctive group of people
        with some shared interest; "the Western world" [syn: {world}]
     5: a knowledge domain that you are interested in or are
        communicating about; "it was a limited domain of
        discourse"; "here we enter the region of opinion"; "the
        realm of the occult" [syn: {region}, {realm}]
Source: WordNet® 2.0

DOMAIN
     Distributed Operating Multi Access Interactive Network (Apollo,
     Internet)
     
     
Source: Virtual Entity of Relevant Acronyms