Etymology of the English word lumen
the English word
lumenderived from the Latin word
lumen (light, opening; light; lamp, torch)
derived from the Classical Latin word
lux (clear; light, daylight, light of day)
derived from the Proto-Indo-European root
*leuk- (bright, white light)
Date
The earliest known usage of lumen in English dates from the 19th century.
Usage
Word found in Modern English
