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

Under cryogenic conditions, the researchers used magneto-optical spectroscopy to cool the device down to temperatures near absolute zero and measured how the electron and hole components responded to small magnetic fields.

— Ameya Paleja, Interesting Engineering, 5 Aug. 2026
The case arose after a patient entered a fertility clinic’s cryogenic storage area and dropped a container holding frozen embryos.

— Risa Cromer, The Conversation, 17 July 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

Above the freezing level, droplets become ice crystals whose collisions separate electrical charges, as in an ordinary thunderstorm.

— Thomas Adamson, Los Angeles Times, 29 July 2026
Monarch caterpillars eat only milkweed, which grows best in cooler climates, but the butterflies can’t tolerate freezing temperatures.

— Vann R. Newkirk II, The Atlantic, 28 July 2026

Definition of freezing

Adjective

He was last seen on a snow machine that broke through an icy river.

— Sam Gillette, PEOPLE, 6 Aug. 2026
The Tropical Coco Fresca is a layered pineapple-watermelon agua fresca with chamoy lava Tajin® rim, paired with a scoop of icy coconut snow that melts into a creamy tropical explosion of flavors, sure to keep you cool in the Texas heat!

— Mateo Rosiles, USA Today, 6 Aug. 2026

Definition of icy

Adjective

Boxwood is generally easy to grow and cold-tolerant, meaning its leaves stay on the plant year-round.

— Samantha Johnson, Martha Stewart, 5 Aug. 2026
Receive free cold beverages at budget-friendly hotels, or pay more for places with welcome champagne and a rooftop pool with Gaudí views.

— Andrea Sachs, Washington Post, 5 Aug. 2026

Definition of cold

Adjective

Party directives call for greater Chinese influence over rules governing the oceans, polar regions, cyberspace, outer space, nuclear safety, anticorruption efforts, climate change, and international finance.

— Mark Jia, Foreign Affairs, 7 Aug. 2026
An Antarctic polar blast swept across parts of New Zealand’s South Island on Tuesday, bringing snow to sea level and icy temperatures that forced road closures and disrupted schools.

— Reuters, NBC news, 5 Aug. 2026

Definition of polar

Adjective

Frozen foods can cook on the outside and remain ice-cold in the center.

— Brandee Gruener, Southern Living, 30 July 2026
Move the animal into shade or air conditioning, regulate its temperature with cool, not ice-cold, water and head to the nearest veterinary clinic while continuing cooling efforts during the trip.

— Lauren Paige Richeson, USA Today, 21 July 2026

Definition of ice-cold

Adjective

His firm has been tracking worldwide advertising content for years, and it's seen a 30% to 40% increase in ad spend targeting warmer regions with arctic imagery.

— Christopher Elliott, USA Today, 7 Aug. 2026
The lander, which touched down in the arctic plains of Mars known as Vastitas Borealis in May 2008, was designed to seek water ice below the surface and hunt organic molecules.

— Tariq Malik, Space.com, 4 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 11 Aug. 2026.

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Synonyms of ultracold

adjective

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