realm meaning and definition

REALM noun

Definition of realm (noun)

1. a domain in which something is dominant
   • "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the south"
   • synonyms: kingdom, land
2. the domain ruled by a king or queen
   • synonyms: kingdom
3. a knowledge domain that you are interested in or are communicating about
   • "it was a limited realm of discourse"; "here we enter the region of opinion"; "the realm of the occult"
   • synonyms: region