(comparative more ultrabright, superlative most ultrabright)
ultra- + bright
"ultrabright." YourDictionary, n.d. Web. 18 December 2018. <https://www.yourdictionary.com/ultrabright>.
ultrabright. (n.d.). Retrieved December 18th, 2018, from https://www.yourdictionary.com/ultrabright
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