1.Definition: (mathematics) the set of values of the independent variable for which a function is defined

Category: General

2.Definition: a particular environment or walk of life

Related Noun(s):area, arena, field, orbit, sphere

Category: General

3.Definition: people in general; especially a distinctive group of people with some shared interest

Related Noun(s):world

Category: General

4.Definition: territory over which rule or control is exercised

"His domain extended into Europe", "He made it the law of the land"

Related Noun(s):demesne, land

Category: Places

5.Definition: the content of a particular field of knowledge

Category: General