domain

Meanings

• a particular environment or walk of life
• territory over which rule or control is exercised
  • "his domain extended into Europe"
• (mathematics) the set of values of the independent variable for which a function is defined
• people in general; especially a distinctive group of people with some shared interest
• the content of a particular field of knowledge

Synonyms

area, arena, demesne, domain of a function, field, knowledge base, knowledge domain, land, orbit, sphere, world