An ambassador with full powers to sign treaties or otherwise act for the state or monarch.
More example sentences
- Following that, he held various posts, mainly in Japan but also elsewhere, before once again becoming ambassador plenipotentiary to Japan in February, 2004.
- In accordance with this the ambassadors plenipotentiary duly appointed by both parties appeared at the said time and places named.
- During the Civil War, Dr Ikejiani was director of laboratory services, and Ambassador Plenipotentiary.