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lightness (2)
lightning
lightning arrester
lightning bug
lightning chess
lightning conductor
lightning rod
lightning strike
lightproof
lights
lights out
lightshade
lightship
lightsome
lightstick
lightweight
lightwood
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lightproof

light·proof [ lt prf ]


adjective 
Definition:
 
impenetrable by light: designed so as not to be penetrated or affected by light

[<light1]
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