ˈɛə̯ɹɪə̯ ˈæɹ.i.ə əˈɹiːnə dɪˈmeɪn dəˈmeɪn doʊˈmeɪn fiːld fild ˈɔː.bɪt ˈɔɹ.bɪt sfɪə sfɪɹ wɜːld wɝld wɵːld the content of a particular field of knowledge people in general; especially a distinctive group of people with some shared interest the Western world (mathematics) the set of values of the independent variable for which a function is defined territory over which rule or control is exercised his domain extended into Europe he made it the law of the land 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