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

 

copulation

 noun
noun
BrE BrE//ˌkɒpjuˈleɪʃn//
 
; NAmE NAmE//ˌkɑːpjuˈleɪʃn//
 
[uncountable](specialist)
 
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the act of having sex Copulation occurs at the nest site.