liquid oxygen

noun
1.
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
Examples from the web for liquid oxygen
  • 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.
British Dictionary definitions for liquid oxygen

liquid oxygen

noun
1.
the clear pale blue liquid state of oxygen produced by liquefying air and allowing the nitrogen to evaporate: used in rocket fuels Also called lox