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ultraclean

[ uhl-truh-kleen ]
/ ˌʌl trəˈklin /
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adjective
extremely clean, especially free of germs: an ultraclean laboratory.
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Origin of ultraclean

First recorded in 1965–70; ultra- + clean
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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