as in spotless
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Recent Examples of ultraclean
In this program, the ESA Web TV crew travel back to Turin, Italy, to talk to the teams and watch as new tests are being conducted with the rover’s Earth twin, Amalia, while the real rover remains carefully stored in an ultraclean room.
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IEEE Spectrum, 22 Mar. 2023
Clean Whipped Clay Detox Face Mask leaves your face feeling ultraclean but not stripped dry.
—Allure Editors, Allure, 13 Sep. 2022
They are made on gigantic, ultraclean factory room floors that can be seven stories tall and run the length of four football fields.
—New York Times, 8 Apr. 2022
The chalk-size core will be stored in an ultraclean metallic tube, one of 38 samples that the rover eventually collects, with about 30 of those likely to be returned to Earth by later missions.
—Paul Voosen, Science | AAAS, 21 July 2021
Recipharm is hiring around 65 workers and training them to work in the ultraclean conditions of its production lines.
—Joseph Walker, WSJ, 19 Dec. 2020
Recent Examples of Synonyms for ultraclean
Adjective
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Despite the busy holiday rush, many South Florida restaurants and food trucks managed to keep their premises spotless in December, from beloved staples (Rustic Inn Crabhouse) to new spots (Sotogrande at Pier Sixty-Six).—
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Michelle Buteau doesn’t believe in perfect mornings, spotless sweatpants, or rigid holiday rituals.—
Adjective
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The clean double-breasted buttons instantly add elegance to your airport outfit, especially when paired with a matching Amazon Essentials Turtleneck and sleek black Libin Wide-leg Dress Pants to keep you warm and comfortable from takeoff to arrival.—
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Baby and Kids' Toys Babies put everything in their mouths, and the dishwasher is a perfect way to keep teething rings and pacifiers clean.—
Adjective
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Many reviewers credited the beach’s immaculate facilities and amenities— including bathrooms, charcoal grills, tables, and picnic pavilions—for making their visits true trips to paradise.—
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But with Mayfield playing immaculate hero ball, those issues are less important than the fact that Tampa’s young (and now injured) secondary is exactly the type of game the Lions prefer to hunt.—
Adjective
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These bold stainless-steel lamps cast light in the exact right position.—
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The stainless-steel exterior offers a sleek look that is resistant to scratching, discoloration and rust.—
Adjective
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January 2, 2024 The Rugged Cool of California's Santa Ynez Wine Country The pure, unsullied California-ness of the Santa Ynez Valley, a tiny wine region inland from the Central Coast, has turned it into one of the state's most popular weekend getaways.—
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Ghibli managed to do it in a way that was relatively independent and unsullied of that business.—
Adjective
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Keep your refrigerator spick-and-span by washing produce drawers with hot water and soap, and spraying all surfaces down with a disinfecting (but non-toxic and food-friendly) vinegar solution.—
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This compound has antimicrobial properties that leave your grill spick-and-span.—
Adjective
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Samar wouldn’t have been as easily swayed by the hum of a working laptop and unstained white paint, Yogan guessed, for his new friend had laughed in a slightly superior way at these details of Yogan’s story.—
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Traces of arecoline, a stimulant exclusively found in betel nuts, were present in all the reference samples and in three archaeological samples that came from the unstained teeth of a woman.—
Adjective
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Whoever wins cleanly leaves with both the championship belts.—
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The folding handles close away neatly into side recesses to create flush sides that store cleanly side by side.—
Cite this Entry
“Ultraclean.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultraclean. Accessed 13 Jan. 2026.
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