lumen
noun/ˈluːmɪn/
/ˈluːmɪn/
(abbreviation lm)
(physics)- a unit for measuring the rate of flow of lightWord Originlate 19th cent.: from Latin, literally ‘light’.
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
Check pronunciation:
lumen