lux noun.
[lʌks] Pl.
lux.
L19.[Latin = light.]Physics. The SI unit of illumination, equal to the illumination of a surface all of which is one metre from a uniform point source of light of unit intensity (now one candela), i.e. (as now defined) one lumen per square metre. (Symbol lx.)
■ luxmeter noun an instrument for measuring the brightness or illumination of a surface
E20. [TahlilGaran] English Dictionary ▲