What is another word for liquid hydrogen?
Pronunciation: [lˈɪkwɪd hˈa͡ɪdɹəd͡ʒən] (IPA) 
Liquid hydrogen is a chemical compound that exists in its liquid form at extremely low temperatures. It is widely used as a rocket fuel and a coolant for various applications due to its high energy density and low weight. There are several synonyms for liquid hydrogen, including LH2, cryogenic hydrogen, and hydrogen ice. LH2 is an abbreviation for liquid hydrogen, while cryogenic hydrogen refers to any gaseous or liquid hydrogen that has been cooled to very low temperatures. Hydrogen ice is the solid form of liquid hydrogen that forms at extremely low temperatures. These synonyms are commonly used in the scientific and engineering communities to describe liquid hydrogen and its various forms.
