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

 

extermination

 noun
noun
BrE BrE//ɪkˌstɜːmɪˈneɪʃn//
 
; NAmE NAmE//ɪkˌstɜːrmɪˈneɪʃn//
 
[uncountable]
 
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the act of killing all the members of a group of people or animals the extermination of rats and other vermin