Definition of luminous paint
: a paint containing a phosphor (such as zinc sulfide activated with copper) and so able to glow in the dark
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“Luminous paint.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/luminous%20paint. Accessed 7 Aug. 2022.
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Time Traveler for luminous paint
The first known use of luminous paint was in 1884
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