Definition of plenipotentiary noun from the Oxford Advanced American Dictionary

 

plenipotentiary

 noun
noun
NAmE//ˌplɛnəpəˈtɛnʃiˌɛri//
 
, NAmE//ˌplɛnəpəˈtɛnʃəri//
 
(pl. plenipotentiaries)(technology)
 
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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.
plenipotentiaryadjective
 
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plenipotentiary powers