LUMEN
What does "LUMEN" mean?
The SI unit of luminous flux, measuring the total visible light emitted by a source.
Meanings
- The SI derived unit of luminous flux; the amount of visible light emitted per second, weighted by the eye's sensitivity. A modern LED bulb can pour out 800 lumens while sipping 9 watts. technical
- The cavity or channel inside a tubular structure, such as a blood vessel, intestine, or cell organelle. Plaque had narrowed the lumen of the artery. technical
Did you know?
- The same Latin word 'lumen' names two completely different things in science: in physics it is the unit of light flux (one candela shining into one steradian), and in anatomy it is the hollow inside of a tube like an artery or intestine.
Word origin
From Latin 'lumen', 'light' or 'opening', related to 'lux', 'light'; physics borrowed it for the unit of luminous flux and anatomy for an internal opening.
Remember it
LUMEN lights the room - it shares 'LUM' with ILLUMINATE and LUMINOUS.
A little poem
One small filament-
eight hundred counted lumens
spilled across the page.
haiku
Wordplay
- Why did the artery and the lightbulb argue? Both insisted they were the real lumen.
What it teaches
The same word can name a light and an emptiness; meaning lives in the context, not the letters.
Quick facts
What does LUMEN mean?
The SI unit of luminous flux, measuring the total visible light emitted by a source.
Is LUMEN a valid word?
Yes — LUMEN is one of the answer words in Wordul, the daily word game.
How many letters is LUMEN?
LUMEN has 5 letters and 2 syllables.
Where does LUMEN come from?
From Latin 'lumen', 'light' or 'opening', related to 'lux', 'light'; physics borrowed it for the unit of luminous flux and anatomy for an internal opening.
What can LUMEN teach us?
The same word can name a light and an emptiness; meaning lives in the context, not the letters.
How players do
Be the first to solve it.