デーモン
dēmon[de̞ːmõ̞ɴ]
The English word daemon is translated into Japanese as デーモン (dēmon).
In the context of computing, this term refers to a process that has no controlling terminal.
Meaning: computing: process with no controlling terminal (noun)
How do you pronounce it?
The romanization is dēmon.
Did you know?
- If you were to use the native Japanese word for a demon, 悪魔, instead of デーモン, a software engineer would likely not understand you were talking about a background process.
- While English speakers use 'daemon' to evoke Greek mythology, a Japanese speaker seeing デーモン will almost certainly associate it with the Western concept of a 'demon' due to the phonetic similarity.
- The Japanese term デーモン is a loanword from English, which was itself an intentional misspelling of 'demon' by researchers at MIT in the 1960s to evoke Maxwell's demon.
Examples in context
- 日本の民間伝承では、悪魔と呼ばれる存在もあります。In Japanese folklore, there are creatures called daemons (or monsters) as well.
- バックグラウンドでデーモンが動いています。bakku groundo de deemon ga ugoite imasu.A daemon is running in the background.
- デーモンが停止したため、エラーが出ました。deemon ga teishi shita tame, eraa ga demashita.An error occurred because the daemon stopped.
Example conversation
Two people are discussing a server error at an office.
- 陽葵 Himari陽太君、サーバーの状況はどうですか？Hinata-kun, saabaa no joukyou wa dou desu ka?Hinata, how is the server status?
- 陽太 Yota特定のデーモンが落ちているようです。Tokutei no deemon ga ochite iru you desu.It looks like a specific daemon has crashed.
- 陽葵 Himariすぐに再起動を試してください。Sugu ni saikidou o tameshite kudasai.Please try to restart it immediately.
- 陽太 Yota分かりました、すぐに確認します。Wakarimashita, sugu ni kakunin shimasu.Understood, I will check it right away.
Sources
- Wiktionary, “daemon” translations and entries デーモン, CC BY-SA 4.0, dump of 2026-09-26.
- Word origins: Wiktionary entries デーモン, CC BY-SA 4.0.
