su·​per·​cool | \ ˌsü-pər-ˈkül How to pronounce supercool (audio) \
supercooled; supercooling; supercools

Definition of supercool

 (Entry 1 of 2)

transitive verb

: to cool below the freezing point without solidification or crystallization



Definition of supercool (Entry 2 of 2)

: extremely cool: such as
a : showing extraordinary reserve and self-control
b : being the latest style or fashion

Synonyms & Antonyms for supercool

Synonyms: Adjective

Antonyms: Adjective

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Examples of supercool in a Sentence

Adjective the teen picked out some supercool, superexpensive sneakers
Recent Examples on the Web: Verb Gizmodo reports that some whimsical scientists have supercooled their Lego bricks in order to test for heat tolerance. Caroline Delbert, Popular Mechanics, 26 Dec. 2019 Any potential solution, like one proposed in 2018 that uses cesium gas, must combine extremely high-level knowledge of multiple disciplines and cutting-edge tools like supercooling and antimatter beams. Caroline Delbert, Popular Mechanics, 9 Dec. 2019 Like many hibernating insects, overwintering mosquitoes depend on supercooling, a process by which an animal has the ability to rid its body fluids of impurities that would trigger the formation of ice. Ned Rozell, Anchorage Daily News, 7 July 2018 The key is supercooling magnetized molecules to minus 351 degrees Fahrenheit. Lacy Schley, Discover Magazine, 10 Nov. 2017 Recent Examples on the Web: Adjective His work isn’t on view in the supercool galleries of New York’s Chelsea or at Art Basel Miami Beach. Judith H. Dobrzynski, WSJ, 25 Feb. 2022 One supercool thing about Gaggia is that in 1936 the Italian espresso machine manufacturer developed the modern process of using water pressure, not steam, to extract espresso shots and patented it in 1938. Jenna Adrian-diaz, Bon Appétit, 22 Feb. 2022 As people drool over the supercool trailer for Jim Jarmusch’s upcoming zombie film, The Dead Don’t Die, take the chance to acquaint yourself with his early work, starting with this 1984 breakthrough, starring John Lurie and Richard Edson. Brian Tallerico, Vulture, 2 Nov. 2021 So, ahead, scroll through our gift guide for 32 wedding anniversary gifts, from pretty jewelry to stylish homeware and, yes, supercool appliances. Laura Lajiness, Glamour, 28 Sep. 2021 Aziz: The supercool design of Tarform is one that turns a lot of heads. Afdhel Aziz, Forbes, 20 May 2021 The secret is using liquid hydrogen to supercool engine parts to a superconducting state. Caroline Delbert, Popular Mechanics, 23 Apr. 2021 Infinited Fiber Company is a supercool Finnish fashion and textile technology start-up which literally turns textile waste into up-cycled fibres that are being used by some of the world’s leading fashion brands like Patagonia, H&M and Wrangler. Afdhel Aziz, Forbes, 21 Apr. 2021 Like Pfizer's Covid-19 candidate, one of the Ebola vaccines requires supercool temperatures in transit. NBC News, 24 Nov. 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supercool.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of supercool


1904, in the meaning defined at transitive sense


1962, in the meaning defined above

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The first known use of supercool was in 1904

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Cite this Entry

“Supercool.” Dictionary, Merriam-Webster, Accessed 28 Jun. 2022.

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Nglish: Translation of supercool for Spanish Speakers


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