supercool

American  

[soo-per-kool] / ˌsu pərˈkul /

verb (used with object)

1. to cool (a liquid) below its freezing point without producing solidification or crystallization; undercool.

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verb (used without object)

1. to become supercooled.

adjective

1. very cool in temperature, especially of the maximum coolness possible: used as a setting on air conditioners.

2. Slang. very cool; very sophisticated, up-to-date, unemotional, etc.

supercool British  

/ ˌsuːpəˈkuːl /

verb

1. chem to cool or be cooled without freezing or crystallization to a temperature below that at which freezing or crystallization should occur. Supercooled liquids are not in equilibrium

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supercool Scientific  

/ so̅o̅′pər-ko̅o̅l′ /

1. To cool a substance below a phase-transition temperature without the transition occurring. For example, water can be cooled well below the freezing point without freezing (as often happens in the upper atmosphere); the introduction of an impurity or surface can then trigger freezing. Supercooling is an example of hysteresis.

2. Compare superheat

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Etymology

Origin of supercool

First recorded in 1905–10; super- + cool

Example Sentences

“It’s supercool work,” says Natasha Jaques, a computer scientist at Google who studies machine learning but who was not involved with the research.

From Science Magazine • Sep. 18, 2022

To me, that is a supercool scientific puzzle: Why is it that sometimes adolescents do not show this peak in sensitivity to things that are rewarding, whether it’s risk-taking or helping others?

From Washington Post • Aug. 9, 2022

The United States, which produces 96.7 bcfd of gas, has the capacity to supercool about 12.7 bcfd into liquid for transportation by tanker.

From Reuters • Mar. 25, 2022

“I think babies are supercool and really people need to have more babies because, it sounds obvious, but if people don’t have enough babies, humanity will disappear,” he said.

From New York Times • Jul. 25, 2020

He was one of those guys who was supercool, crazy fly, and girls had a thing for his shaved head.

From "The Boy in the Black Suit" by Jason Reynolds