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

 

asphyxiation

 noun
noun
BrE BrE//əsˌfɪksiˈeɪʃn//
 
; NAmE NAmE//əsˌfɪksiˈeɪʃn//
 
[uncountable]
 
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the fact of being prevented from breathing until you become unconscious or die; the act of preventing somebody from breathing until they become unconscious or die The cause of death was asphyxiation.