noun, plural lu·mens, lu·mi·na [loo-muh-nuh]. /ˈlu mə nə/.
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Origin of lumen
Words nearby lumen
Example sentences from the Web for lumen
For huge spacesA junk-drawer flashlight’s brightness measures in the hundreds of lumens.Treat yourself to a flashlight that’s not your phone|Rob Verger|December 15, 2020|Popular Science
From 2005 to 2017, efficiency increased from 25 lumens per watt to 160.
That reminds me, I'd better arrange a debate on immigration for the Lumen.
"She made a splendid impression on the Lumen," Colburn went on.
In the second main variety of gland the secretory portion is enlarged and the lumen variously increased in size.
At about the time when a lumen appears in the Oviduct the first traces of the Wolffian duct become visible.
While undergoing this change of position it also acquires a lumen, but ends blindly both in front and behind.