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

LNG is not only linked to methane leakage, but takes large amounts of energy to supercool and ship, adding to its carbon footprint.

From Reuters • Mar. 3, 2023

“It’s a supercool study,” said Itsik Pe’er, a computational geneticist at Columbia University who was not involved in the research.

From New York Times • Nov. 30, 2022

For all its supercool posturing, casual cruelty and lurid overcompensation, “Bullet Train” was a cozy all along.

From Washington Post • Aug. 2, 2022

But in the meantime, Soltis adds, “it’s supercool when we get something like this out of the fossil record.”

From Science Magazine • May 26, 2021

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