Definition of cryogen in English:
 cryogen
noun ˈkrʌɪə(ʊ)dʒ(ə)nˈkraɪədʒən
A substance used to produce very low temperatures.
 Example sentencesExamples
-  Accelerators with cryogenics or superconducting magnets use distribution boxes to supply cryogens for the cold devices.
 -  The material combination of high strength, good toughness, and weldability should prompt designers to specify it for welded pressure vessels for the storage of cryogens.
 -  As the heat from the RF frequency stimulates the collagen, a cryogen spray is used to cool the outer layer of skin to tighten it up, and to prevent any burning effect.
 -  The first cryogens were liquid air and compressed carbon dioxide snow.
 -  After all, a superconductor that is both easy to process and can be cooled using electrical refrigerators, rather than messy cryogens, would find many applications.
 -  This approach preserves native structure by rapidly freezing the specimen in a thin aqueous layer by plunging into cryogen, without the use of fixatives or stains.
 -  They also recommended that a prototype using hydrogen as a combined cryogen and form of energy transport be designed, built and tested at one of the national laboratories.
 -  A cryogen spray simultaneously cools the skin's surface before, during and after each radio frequency pulse to further protect the epidermis.