Thesaurus

ultracool

adjective

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Time Traveler for ultracool

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The first known use of ultracool was in 1868

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Cite this Entry

“Ultracool.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultracool. Accessed 13 Apr. 2021.

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