l 1 u 1 m 3 e 1 n 1
5 letters · 7 points in Scrabble
Meaning
noun a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
noun a cavity or passage in a tubular organ
originBorrowed from Latin lūmen (“light, an opening”). Use as a unit was first adopted by French physicist André Blondel in 1894.
Etymology from Wiktionary, CC BY-SA 3.0