(comparative more rayproof, superlative most rayproof)
ray + -proof
"rayproof." YourDictionary, n.d. Web. 06 December 2018. <https://www.yourdictionary.com/rayproof>.
rayproof. (n.d.). Retrieved December 06th, 2018, from https://www.yourdictionary.com/rayproof
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