liquid oxygen

noun
a clear, pale blue liquid obtained by compressing oxygen and then cooling it below its boiling point: used chiefly as an oxidizer in liquid rocket propellants.
Also called lox, LOX.


Origin:
1875–80

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World English Dictionary
liquid oxygen
 
n
Also called: lox the clear pale blue liquid state of oxygen produced by liquefying air and allowing the nitrogen to evaporate: used in rocket fuels

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
The space shuttle's external fuel tank had collapsed, releasing all its liquid hydrogen and liquid oxygen propellants.
Liquid oxygen is more expensive than compressed gas but takes up less space and can be more easily transferred to a portable tank.
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