ultracold

adjective

ul·​tra·​cold ˌəl-trə-ˈkōld How to pronounce ultracold (audio)
: having a very low temperature : extremely or extraordinarily cold
ultracold liquid nitrogen
ultracold temperatures

Examples of ultracold in a Sentence

Recent Examples on the Web As for the detectors, the injectors, the magnets, the thousands of tonnes of ultracold collider? Daniel Garisto, Scientific American, 27 Apr. 2022 Instead of looking to the sky, researchers are peering into clouds of ultracold atoms created in laboratories here on Earth. Matthew Smith, Ars Technica, 8 July 2023 These ultracold atom clouds are actually closer to being a unitary gas than neutron star matter, so the analogy isn’t perfect. Matthew Smith, Ars Technica, 8 July 2023 Maintaining the propellants at steady, ultracold temperatures inside the depot will be a challenge. Kenneth Chang, New York Times, 18 Nov. 2023 See all Example Sentences for ultracold 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultracold.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of ultracold was in 1861

Dictionary Entries Near ultracold

Cite this Entry

“Ultracold.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultracold. Accessed 30 Jun. 2024.

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