What does cryogenic mean?
What is Cryogenic Technology? All about ISRO's biggest cryogenic propellant tank
Cryogenic : definition of Cryogenic and synonyms of Cryogenic (English)
Cryogenic liquids need to be handled carefully as they cause cold burns and frostbites.
Those who did guard it with all their might.
Cryogenic liquids are typically stored in devices called Dewar flasks.