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

• 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

The idea that humans could one day populate and even colonize Mars is one no longer confined to the realm of science fiction. —Eric Lagatta, USA Today, 22 Aug. 2025

Embraer has chosen to not contest the two major OEM’s in the narrow body realm of A320’s and B737’s which carry 150 or more passengers. —Jerrold Lundquist, Forbes.com, 21 Aug. 2025

Natter’s responsibilities expanded into other realms. —Mitch Sherman, New York Times, 21 Aug. 2025

But, for the first time, their fragrance is entering the realm of makeup. —Essence, 20 Aug. 2025

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
• 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