hyperbaric
adjective/ˌhaɪpəˈbærɪk/
/ˌhaɪpərˈbærɪk/
(physics)- (of gas) at a higher pressure than normalWord Origin1960s: from hyper- ‘above normal’ + Greek barus ‘heavy’.
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hyperbaric
Definition of hyperbaric adjective from the Oxford Advanced Learner's Dictionary