kingdom meaning and definition

KINGDOM noun

Definition of kingdom (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: land, realm
2. a country with a king as head of state
3. the domain ruled by a king or queen
   • synonyms: realm
4. a monarchy with a king or queen as head of state
5. the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
6. a basic group of natural objects