lightproof

adjective
light·​proof | \ˈlīt-ˌprüf \

Definition of lightproof 

: impenetrable by light

First Known Use of lightproof

1923, in the meaning defined above

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The first known use of lightproof was in 1923

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Spanish Central: Translation of lightproof

Nglish: Translation of lightproof for Spanish Speakers

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