A person invested with full power to transact any business; especially, an ambassador or envoy to a foreign court, with full power to negotiate a treaty, or to transact other business
A plenipotentiary is a person who has full power to make decisions or take action on behalf of their government, especially in a foreign country. the British Plenipotentiary to the UN conference
If someone such as an ambassador has plenipotentiary powers, they have full power or authority to represent their country. plenipotentiaries someone who has full power to take action or make decisions, especially as a representative of their government in a foreign country
A person who has full power to do something In international law, a senior diplomatic officer commissioned to act for his or her government A minister plenipotentiary is one who by custom ranks immediately below an ambassador and is of the same rank as an envoy extraordinary