Definition of exhalation noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌekshəˈleɪʃn//
; NAmE NAmE//ˌekshəˈleɪʃn//
[uncountable, countable](formal)
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an act of breathing out the air or smoke that is in your lungs Carbon dioxide is eliminated from the body during exhalation. Each exhalation was visible in the cold air.