"Lux" is "light."
Light
Lux is latin for light
Christi crux est mea lux is Latin for "Christ's cross is my light".
Lux means light
Lux
Levis; lux.
Translated word for word, it means 'From knowledge, light.'
holy light = lucem sanctam
Lux.
lunae lux
Lux astri