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English definition of “oxygen tank”

oxygen tank

noun [C]    
a container with oxygen inside it, used for helping people to breathe, for example when they are very ill, or when they are diving underwaterContainers for liquids and gasesMedical dressings, supports and devicesWater sportsSwimmingSailing and boating
(Definition of oxygen tank noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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