ULTRACOLD Synonyms: 90 Similar and Opposite Words

ultracold

adjective

Definition of ultracold

as in cryogenic

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of ultracold There, the trio tinkered with ultracold electronics to show that unruly quantum effects could be made macroscopic and controlled. — Dan Garisto, Scientific American, 7 Oct. 2025 The biggest challenge is that the property was observed at ultracold temperatures of about 60 kelvins (-351 °F/-213 °C). — Abhimanyu Ghoshal, New Atlas, 13 June 2025 Its infrared sensors, its ultracold location in space, and its sunshield — which blocks the light of the sun, moon and Earth — are uniquely suited to resolve the first galaxies and their stars. — Rebecca Boyle, Quanta Magazine, 9 Oct. 2024 The number of ultracold atoms in the resulting Bose-Einstein condensate was measured and fed back to the player as a score. — IEEE Spectrum, 22 Oct. 2019 See All Example Sentences for ultracold

Recent Examples of Synonyms for ultracold

Adjective

A lot of uncertainty remains in the lift capacity of Starship, as well as in how much cryogenic methane and liquid oxygen will boil off in orbit and how efficient the process of transferring propellants from one ship to another will be.

— Eric Berger, ArsTechnica, 23 Oct. 2026
Researchers from Helical Fusion and the National Institute for Fusion Science placed the test coil inside a specialized cryogenic chamber.

— Aman Tripathi, Interesting Engineering, 26 Aug. 2026

Definition of cryogenic

Adjective

Drawing on his time doing drag in Toronto, Shatford paid homage to the dedication needed to dress up in subzero temperatures.

— Violet Goldstone, Footwear News, 5 June 2026
As the episode makes clear, fishing this far north comes with brutal conditions, including shallow waters, towering waves and subzero temperatures.

— Deirdre Durkan, PEOPLE, 7 May 2026

Definition of subzero

Adjective

The beautiful, bright, and incredibly chic three-story abode leads up to a private roof terrace covered in pines with a freezing plunge pool at its center, and an unassuming wooden door that leads to a private sauna.

— Condé Nast, Condé Nast Traveler, 22 Oct. 2026
Freeze Warning The stronger of the two alerts, this warning calls for sub-freezing temperatures dropping as low as 30 degrees.

— Ahmad Bajjey, CBS News, 16 Oct. 2026

Definition of freezing

Adjective

Available both in the restaurant and the cafe at All Mart’s entrance, this icy dessert has a floral cardamom flavor and a slight crunch from its dusting of pistachios.

— Anne Ewbank, Sacbee.com, 23 Oct. 2026
But there’s no icy chill to his vision, only the glib confidence that a feel-good montage or a piercing Anohni and the Johnsons ballad will blind us to his film’s lack of human connection.

— Los Angeles Times, Los Angeles Times, 22 Oct. 2026

Definition of icy

Adjective

The instigating weather system bringing the risk to the Southwest is an upper-level low — or a high altitude pocket of cold air, low pressure and spin.

— Jamie Ross, Washington Post, 21 Oct. 2026
The case went cold until 2014, when Stockwell was located and interviewed by cold case detectives.

— Kerry Breen, CBS News, 21 Oct. 2026

Definition of cold

Adjective

Holmes, with her wide eyes and soft-spoken voice seems like the polar opposite of Evans’s brash, unapologetic monument to masculinity.

— Fran Hoepfner, Vulture, 20 Oct. 2026
As polar ice melts in the Arctic, shipping lanes are opening up, making the region a new zone of superpower competition.

— Dave Davies, NPR, 14 Oct. 2026

Definition of polar

Adjective

Book a table at Supernormal, Andrew McConnell’s cult Melbourne import serving up lobster rolls and ice-cold martinis.

— Alli Forde, Travel + Leisure, 17 Oct. 2026
The McDonald’s drive-thru has always been a great place to grab a quick bite on the road or the perfect mid-afternoon snack (which is an order of piping hot and perfectly salty fries and an ice-cold Diet Coke).

— Melissa Locker, Southern Living, 28 Sep. 2026

Definition of ice-cold

Adjective

Dropping in a light arctic gray and black colorway first, the sneaker is aesthetically defined by an abstract undulating design.

— Jaden Thompson, Footwear News, 19 Oct. 2026
Justin Sauers, the tower’s operator, opened a door in the cabin to greet Donnelly, releasing an arctic blast.

— Robert Sullivan, New Yorker, 17 Aug. 2026

Definition of arctic

Browse Nearby Words

ultraclean

ultracold

ultracompetent

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“Ultracold.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultracold. Accessed 27 Oct. 2026.

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Synonyms of ultracold

adjective

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