LUMEN-HOUR


Meaning of LUMEN-HOUR in English

/looh"meuhn oweur', -ow'euhr/ , n. Optics.

a unit of luminous energy, equal to that emitted in 1 hour by a light source emitting a luminous flux of 1 lumen. Abbr.: lm-hr

[ 1920-25 ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .