I hope this is not another joke..

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Kry·o·gen·x [ kr ə jénniks ]

noun

Study of Extremely Low Temperatures: (1)A branch of physics that studies the causes and effects of extremely low temperatures.(2)A very dope rapper that appeared on Http://www.Rapbattles.com is September 2003.He is known to be highly contagious.If touched, you might become "sonned".