unit of illumination, 1889, from Latin lux "light" (see light (n.)).
"luxury, elegance," 1550s, from French luxe "luxury, sumptuousness, profusion," from Latin luxus (see luxury).
lux (lŭks)n. pl. lux·es or lu·ces (lōō'sēz) Abbr. lx The International System unit of illumination, equal to one lumen per square meter. Also called candle-meter, meter-candle.