millilux
/ˈmɪlɪˌlʌks/
noun
- A unit of illuminance equal to one thousandth of a lux, used to measure very low light levels.
- The photometer displayed readings in millilux for the darkroom experiment.
- The night vision camera can operate in light as low as one millilux.
- Scientists measured the moonlight at just 0.5 millilux.