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It is the hypothetical source of/evidence for its existence is provided by: Sanskrit rocate "shines " Armenian lois "light," lusin "moon " Greek leukos "bright, shining, white " Latin lucere "to shine," lux "light," lucidus "clear " Old Church Slavonic luci "light " Lithuanian laukas "pale " Welsh llug "gleam, glimmer " Old Irish loche "lightning," luchair "brightness " Hittite lukezi "is bright " Old English leht, leoht "light, daylight spiritual illumination," German Licht, Gothic liuhaþ "light." " lucent lucid Lucifer luciferase luciferous lucifugous lucubrate lucubration luculent lumen Luminal luminary luminate luminescence luminous luna lunacy lunar Lunarian lunate lunation lunatic lune lunette luni- luster lustrum lux pellucid sublunary translucent. It forms all or part of: allumette elucidate illumination illustration lea leukemia leuko- light (n.) "brightness, radiant energy " lightning limn link (n.2) "torch of pitch, tow, etc. Proto-Indo-European root meaning "light, brightness."
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