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

 

plenipotentiary

 noun
noun
BrE BrE//ˌplenɪpəˈtenʃəri//
 
; NAmE NAmE//ˌplenɪpəˈtenʃəri//
 
, also NAmE//ˌplenɪpəˈtenʃieri//
 
(pl. plenipotentiaries)(specialist)
 
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a person who has full powers to take action, make decisions, etc. on behalf of their government, especially in a foreign country He was promoted from minister plenipotentiary to full ambassador. Word Origin mid 17th cent.: from medieval Latin plenipotentiarius, from plenus ‘full’ + potentia ‘power’.

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