cryogenn.
/ˈkrʌɪə(ʊ)dʒ(ə)n/, /ˈkrʌɪə(ʊ)dʒɛn/, U.S. /ˈkraɪədʒən/ A substance used to produce very low temperatures; a cryogenic substance. Frequently attributive.In early use referring to the production of temperatures below freezing. In later use usually referring to substantially lower temperatures (cf. cryogenic adj.).
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the world > matter > chemistry > chemical substances > [noun] > types by properties
agent1624
analyser1661
pyrophorus1734
pyrophore1788
frigoric1812
diffusate1850
diffusant1867
cryogen1875
metachrome1876
carrier1902
getter1912
active1918
network former1947
network modifier1947
radiosensitizer1953
monophase1968
1875 F. Guthrie in London, Edinb., & Dublin Philos. Mag. 4th Ser. 49 206 By Cryogen I mean an appliance for obtaining a temperature below 0° C. In this paper it always signifies a freezing-mixture.
1916 Ice & Refrigeration Nov. 208/1 The refrigerating industry makes no use of cryogen mixtures, apart from hand apparatus for prepared ices and cold beverages.
1964 Financial Analysts Jrnl. Mar.–Apr. 104/1 The emphasis is shifting from the production of cryogens—i.e., gases that liquefy at temperatures below −200° Fahrenheit..—to the phenomena that occur at temperatures close to Absolute Zero.
1985 D. Brin in I. Asimov et al. Great Sci. Fiction 142 A little trouble with the cryogen cooling units; they were labouring a bit.
2003 Vogue May 260/1 A cryogen spray, which cools the skin's surface before, during, and after each radio-frequency pulse.
This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022).
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n.1875