realm

noun

ˈrelm 

1

: kingdom sense 3

2

: sphere, domain

within the realm of possibility

3

: a primary marine or terrestrial biogeographic division of the earth's surface

Synonyms of realm

• area
• domain
• element
• field
• department
• sphere
• kingdom
• walk
• territory

Examples of realm in a Sentence

new discoveries in the realm of medicine

in political and legal realms

Recent Examples on the Web

This practice exiles him completely from the realm of literary fiction; some might even question whether Patterson is really a writer. —Joshua Rothman, New Yorker, 3 Apr. 2026

Detecting a single photon is difficult, but as scientists delve into the quantum realm, even microwave photons can make a difference. —Ameya Paleja, Interesting Engineering, 3 Apr. 2026

But in the shadows, amid growing unease at the bloodthirsty actions of the realm’s merciless Mad King, dissenters from his inner circle anxiously advance a treasonous plot. —Ryan Brennan april 3, Charlotte Observer, 3 Apr. 2026

Why not enter the realm of the fantastic and explore some of the terrifying creatures that roam the wilds of the imagination? —Encyclopedia Britannica, 2 Apr. 2026

Word History

Etymology

Middle English realme, from Anglo-French, alteration of Old French reiame, from Latin regimen control — more at regimen

First Known Use

13th century, in the meaning defined at sense 1

Phrases Containing realm

• coin of the realm
• outside the range/realm of possibility
• outside the realm of the possible
• range/realm of possibility
• within the range/realm of possibility
• within the realm of the possible

Rhymes for realm

• elm
• helm
• overwhelm

Kids Definition

realm

noun

ˈrelm 

1

: kingdom sense 1

2

: field of influence or activity

the realm of art