kingdom

noun

king·​dom ˈkiŋ-dəm 

1

: a politically organized community or major territorial unit having a monarchical form of government headed by a king or queen

2

often capitalized

a

: the eternal kingship of God

b

: the realm in which God's will is fulfilled

3

a

: a realm or region in which something is dominant

a cattle kingdom

b

: an area or sphere in which one holds a preeminent position

The office was his own private kingdom.

4

a

: one of the three primary divisions into which natural objects are commonly classified compare animal kingdom, mineral kingdom, plant kingdom

b

: a major category (such as Plantae or Protista) in biological taxonomy that ranks above the phylum and below the domain

5

archaic : kingship

Synonyms

• realm
• area
• domain
• department
• element
• field
• sphere
• walk
• province

Examples of kingdom in a Sentence

After Queen Mary I died, her half sister Elizabeth ruled the kingdom.

a studio head who was once the undisputed ruler of the kingdom of Hollywood

Recent Examples on the Web

With war looming and chaos consuming the kingdom — drawing in the ruthless kings of other Scandinavian countries and even a powerful English ruler — the stage is set for a thundering, cataclysmic and utterly magical new Norse saga. —Matt Grobar, Deadline, 10 Oct. 2025

Uber co-founder Travis Kalanick and CEO of Red Sea Global John Pagano were both granted Saudi citizenship as part of a yearslong drive by the kingdom to attract top global talent. —Kelsey Warner, semafor.com, 10 Oct. 2025

Or will Europe’s deliberative vigilance save humanity from handing over the keys of the kingdom to intelligent machines? —Big Think, 9 Oct. 2025

Her latest takes that scenario to a darker and more twisted place, deepening the feeling that things are far from okay in the kingdom. —Jordan Mintzer, HollywoodReporter, 7 Oct. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing kingdom

• animal kingdom
• kingdom come
• mineral kingdom
• plant kingdom
• to kingdom come

Kids Definition

kingdom

noun

king·​dom ˈkiŋ-dəm 

1

: a country whose ruler is a king or queen

2

: a region in which something or someone has very strong influence

the cotton kingdom

3

a

: one of the three primary divisions into which natural objects are classified compare animal kingdom, mineral kingdom, plant kingdom

b

: a major category in the scientific classification of living things that ranks above the phylum and below the domain

Medical Definition

kingdom

noun

king·​dom ˈkiŋ-dəm 

1

: any of the three primary divisions into which natural objects are grouped see animal kingdom, mineral kingdom, plant kingdom

2

: a major category (as Protista) in biological taxonomy that ranks above the phylum and below the domain