領域
ryōiki[ɾʲo̞ːikʲi]
The Japanese word for realm is 領域 (ryōiki).
領域 is used to describe both physical territories and abstract domains, such as fields of expertise, mathematics or science.
Meaning: domain of an abstraction (noun)
Which one should you use?
While 領域 refers to a realm or domain itself, the term 域外 is a formal way to refer to something that is outside of a certain domain or beyond a specific realm.
How do you pronounce it?
ryōiki
Did you know?
- In modern pop culture, especially in the series Jujutsu Kaisen, 領域展開 (ryōiki tenkai) refers to a 'Domain Expansion', a supernatural technique where a character creates a physical manifestation of their inner realm to trap opponents.
- In Japanese philosophy and aesthetics, 境地 (kyōchi) describes a 'realm' that is actually a spiritual state or a new level of mental attainment reached through mastery.
- In the digital world, Japanese treats computer memory as a physical landscape, using the term 領域 (ryōiki) to describe 'memory domains' or 'address spaces'.
Examples in context
- 彼女は芸術の領域における先駆者です。She is a pioneer in the realm of art.
- 私の領地に踏み込むなよ！Don't intrude upon my realm!
- 数学の領域Mathematics no ryōiki
- それは理論の領域です。Sore wa riron no ryōiki desu.That is in the realm of theory.
- 彼の専門の領域は数学です。Kare no senmon no ryōiki wa sūgaku desu.His area of expertise is mathematics.
- 想像力の領域は無限です。Sōzōryoku no ryōiki wa mugen desu.The realm of imagination is infinite.
Example conversation
Two students are discussing a complex philosophy lecture.
- 陽葵 Himariこの話は哲学の領域ですね。Kono hanashi wa tetsugaku no ryōiki desu ne.This topic is in the realm of philosophy, isn't it?
- 大翔 Hirotoはい、とても難しいです。Hai, totemo muzukashii desu.Yes, it is very difficult.
- 陽葵 Himari大翔さんはどう思いますか？Hiroto-san wa dō omoimasu ka?What do you think, Hiroto?
- 大翔 Hiroto少し考えすぎかもしれません。Sukoshi kangaesugi kamoshiremasen.I might be overthinking it a little.
Sources
- Pronunciation: Wiktionary entry 領域, CC BY-SA 4.0, dump of 2026-09-26.
