Definition of realm in English:


Line breaks: realm
Pronunciation: /rɛlm


archaic , literary , or Law
1A kingdom: the defence of the realm
More example sentences
  • The latter term would be reserved for actions relating to the armed forces and the defence of the realm.
  • The defence of the realm, which is the Crown's first duty, is the paradigm of so grave a matter.
  • The only avenue for a Norman legal order, common to the realm, was through a loyal judiciary.
1.1A field or domain of activity or interest: the realm of applied chemistry an overall Labour majority is not beyond the realms of possibility
More example sentences
  • To use them to catch foxes is something that is certainly not beyond the realms of possibility,’ he said.
  • Therefore, do not consider even bothering to try asking for any help as it is completely beyond the realms of possibility that you will be able to find a helpful face in the entire store.
  • Yes councillor, it is not beyond the realms of possibility for councillors, highways, and bus company management to sort out some solution.
1.2 Zoology A primary biogeographical division of the earth’s surface: this zoogeographical realm includes Africa south of the Atlas Mountains
More example sentences
  • The gyre we planned to survey is one of the largest ocean realms on Earth, and one of five major subtropical gyres on the planet.
  • The species are representative of both the Midcontinent and Atlantic faunal realms, but dominantly the former.
  • The Ordovician faunas described herein represent both the Midcontinent and Atlantic faunal realms.


Middle English rewme, from Old French reaume, from Latin regimen 'government' (see regimen). The spelling with -l- (standard from circa1600) was influenced by Old French reiel 'royal'.

Definition of realm in: