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

 

arbitrageur

 noun
noun
BrE BrE//ˌɑːbɪtrɑːˈʒɜː(r)//
 
; NAmE NAmE//ˌɑːrbətrɑːˈʒɜːr//
 
(also arbitrager
BrE BrE//ˈɑːbɪtrɪdʒə(r)//
 
; NAmE NAmE//ˈɑːrbətrɑːʒər//
 
)
(business)
 
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a person whose job involves buying something (for example, shares or foreign money) in one place and sell it in another place where the price is higher one of Wall Street’s most famous arbitrageurs