English Reference
noun

kingdom

n.
US /ˈkɪŋdəm/ UK /kˈɪŋdəm/ king·dom UK spelling kingdom's, kingdom's

  1. 01 A2 Elementary

    a country or territory that is ruled by a king or a queen.

    a state or territory having a monarch as its head.

    Simple

    The ancient kingdom was famous for its beautiful castles and brave knights.

    In context

    The United Kingdom remains a constitutional monarchy where the sovereign's powers are largely ceremonial and defined by established legal conventions.

  2. 02 B2 Upper Intermediate Technical Science

    one of the main groups that scientists use to classify living things, such as animals or plants.

    a high-level taxonomic rank in biological classification, situated below domain and above phylum.

    Simple

    Mushrooms belong to the fungi kingdom rather than the plant kingdom.

    In context

    In modern biological taxonomy, the animal kingdom is distinguished from other groups by the multicellular nature and heterotrophic metabolism of its members.

    categorytaxon
  3. 03 C1 Advanced Literary

    an area or field where a particular person, thing, or idea is the most important.

    a realm, region, or conceptual space where a specific influence or entity is dominant.

    Simple

    In the kingdom of the blind, the one-eyed man is king.

    In context

    The poet's work explores the inner kingdom of the human mind, where dreams and memories hold more power than physical reality.

Scientists call these changes maternal age effects, and while they are widespread across the animal kingdom, researchers still don't fully understand how or why they occur.

Phys.org· 18 Aug 2026

The findings therefore provide a broader framework for understanding genome regulation beyond the plant kingdom.

Phys.org· 17 Aug 2026

From Middle English kingdom, kyngdom, from Old English cyningdōm from Proto-Germanic *kuningadōmaz, equivalent to king + -dom. Cognate with Scots kingdom, West Frisian keuningdom, Dutch koningdom, German Königtum, Danish kongedømme, Swedish kungadöme, and Icelandic konungdómur. Etymology tree Proto-Indo-European *ǵenh₁- Proto-Indo-European *-yós Proto-Germanic *kunją Proto-Indo-European *-n̥kʷo-der.? Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Germanic *-īnaz Proto-Indo-European *-kos Proto-Germanic *-gaz ? Proto-Germanic *-ingaz Proto-Germanic *kuningaz Proto-Indo-European *dʰeh₁- Proto-Indo-European *-mos Proto-Indo-European *dʰóh₁mos Proto-Germanic *dōmaz Proto-Germanic *-dōmaz Proto-Germanic *kuningadōmaz Proto-West Germanic *kuningadōm Old English cyningdōm Middle English kingdom English kingdom

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin gem-pro *kuningadōmaz
Level C1 · Advanced
Frequency Common
Updated