King's Kung-Fu& Tai Chi

Japanese symbol for “lumen”

Romaji: ruumen
lumen (unit of luminous flux)

In Japanese, lumen is (ruumen).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

  1. n lumen (unit of luminous flux) (physics)

Other Japanese words for “lumen”

WordReadingMeaning
ないこう naikoulumen
かんくう kankuulumen

See also: Chinese symbol for “lumen”.

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.