lightproof

adjective
light·​proof | \ ˈlīt-ˌprüf How to pronounce lightproof (audio) \

Definition of lightproof

: impenetrable by light

First Known Use of lightproof

1923, in the meaning defined above

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Time Traveler for lightproof

Time Traveler

The first known use of lightproof was in 1923

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Cite this Entry

“Lightproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lightproof. Accessed 10 Aug. 2020.

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Thesaurus: All synonyms and antonyms for lightproof

Rhyming Dictionary: Words that rhyme with lightproof

Spanish Central: Translation of lightproof

Nglish: Translation of lightproof for Spanish Speakers

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