realm
Americannoun
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a royal domain; kingdom.
the realm of England.
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the region, sphere, or domain within which anything occurs, prevails, or dominates.
the realm of dreams.
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the special province or field of something or someone.
the realm of physics; facts within the realm of political scientists.
noun
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a royal domain; kingdom (now chiefly in such phrases as Peer of the Realm )
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a field of interest, study, etc
the realm of the occult
Synonym Usage
See kingdom.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of realm
First recorded in 1250–1300; Middle English realme, reaume, Old French reialme, from Latin regimen “guidance, direction, rule,” influenced by Old French reial “royal” ( see origin at royal)
Explanation
A realm is an area that is ruled by something. If you are a controlling cook who doesn’t like anyone to do anything else in the kitchen, then the kitchen is your realm. Realm comes from the French for kingdom, but since there aren’t so many kings or queens left in the world, you’ll more often find it referring to non-royal spheres. That could be the sphere of a special kind of knowledge, like the realm of biology, or the political realm. Or it could be an area dominated by some group. Little Italy was famously the realm of the mafia; Hollywood is the realm of film stars.
Vocabulary lists containing realm
Vocabulary from "Stop Expecting Games to Build Empathy" by Julie Muncy
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100 SAT words Beginning with "R"
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Beowulf vocabulary
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Dennis, who barely escaped after stumbling into that realm through a hidden portal, hoped never to return.
From The Wall Street Journal • Jul. 9, 2026
“Spirited Away” is a story of a girl, Chihiro, who wanders with her parents into a magical realm and ends up getting stuck there when her mother and father transform into pigs.
From Salon • Jul. 8, 2026
Some have been generally favorable toward SpaceX plans — which include dominating the realm of rocket launches, satellite communications and artificial intelligence — and the stock.
From MarketWatch • Jun. 22, 2026
For now, however, all that is still in the realm of possibility.
From BBC • Jun. 16, 2026
Clare felt it before he saw it: the release in his chest as one less realm coursed through his veins.
From "The Undead Fox of Deadwood Forest" by Aubrey Hartman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
