Synonyms for domain

Noun

1. sphere, domain, area, orbit, field, arena, environment

usage: 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"

2. domain, demesne, land, region

usage: territory over which rule or control is exercised; "his domain extended into Europe"; "he made it the law of the land"

3. domain, set

usage: the set of values of the independent variable for which a function is defined

4. world, domain, class, social class, socio-economic class

usage: people in general; especially a distinctive group of people with some shared interest; "the Western world"

5. domain, region, realm, knowledge domain, knowledge base

usage: 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"