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.

---

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

---

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

---

Etymology

Origin of supercool

First recorded in 1905–10; super- + cool

Example Sentences

See Examples For:

supercool

On the other side of the country, Boris Rubinsky had the idea that higher pressures might help him supercool organs without damage.

From Science Magazine ● Jun. 21, 2023

Maybe, I’m a supercool couch slalom master from a land far, far away.

From New York Times ● Jun. 6, 2023

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

From Washington Post ● Aug. 2, 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

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