English

Definition of whereupon conjunction from the Oxford Advanced Learner's Dictionary

 

whereupon

 conjunction
conjunction
BrE BrE//ˌweərəˈpɒn//
 
; NAmE NAmE//ˌwerəˈpɑːn//
 
(formal)
 
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and then; as a result of this He told her she was a liar, whereupon she walked out.
See the Oxford Advanced American Dictionary entry: whereupon