Last Updated
：2025/12/20
ルーメン
Hiragana
るうめん
Noun
Japanese Meaning
光束の強さを表す国際単位系の単位。記号は lm。 / 解剖学などで、中空の管状器官の内側にある空洞や腔所。血管や腸管などの内部空間を指す。
Easy Japanese Meaning
あかりのつよさをあらわすたんいのなまえ。またくだのなかのあなのこと。
Chinese (Simplified)
流明（光通量的SI单位） / 管腔（管状器官内部的空腔）
Sense（1）
(physics) lumen (SI-unit for luminous flux)
Sense（2）
(anatomy) a lumen (cavity within tubular organ)
（ romanization ）
Quizzes for review
(physics) lumen (SI-unit for luminous flux) / (anatomy) a lumen (cavity within tubular organ)
See correct answer
ルーメン
See correct answer
The luminous flux of this light bulb is 500 lumens.
See correct answer
この電球の光束は500ルーメンです。
Japanese - English
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