lumen
In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.
Other meanings
The cavity or channel within a tube or tubular organ.
The cavity bounded by a plant cell wall.
Related words
- decalumen
- endolumen
- kilolumen
- lumenally
- lumened
- lumenize
- multilumen
- teralumen
- lumenal
- lumenless
- lumenogenesis
- lumen method
Word history
From Latin "lūmen" (light, an opening).
Where this comes from
This definition is adapted from “lumen” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.