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illuminant

noun

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as in lamp
something that provides illumination at the time, a spermaceti candle was the brightest indoor illuminant available

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illumes

illuminant

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“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 5 Dec. 2022.

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