1) Concept in physics 2) Thermodynamic process 
supercooled; supercool. Liquids at temperatures below their normal freezing points are said to be 'supercooled'.
Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it becoming a solid. ==Explanation== A liquid below its standard freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form creating a solid. Lacking ...
(from the article `amorphous solid`) Some textbooks erroneously describe glasses as undercooled viscous liquids, but this is actually incorrect. Along the section of route 2 labeled ... The Schaefer-Langmuir experiments in the laboratory and the atmosphere demonstrated that so-called supercooled clouds—namely those composed of wate...
cooling of a liquid to a temperature below its freezing point , without causing solidification.
Cooling to a temperature below that of an equilibrium phase transformation without the transformation taking place.Lowering the temperature of a molten metal below its liquidus during cooling.
Cooling of a liquid below its freezing point without freezing taking place; or the cooling of a saturated solution without crystallization taking place, to form a supersaturated solution. In both cases supercooling is possible because of the lack of solid particles around which crystals can form. Crystallization rapidly follows the introduction...
Lowering the temperature of a molten metal below its liquidus during cooling.
Cooling to a temperature below that of an equilibrium phase transformation without the transformation taking place.