How To Use Minister plenipotentiary In A Sentence

He was promoted from minister plenipotentiary to full ambassador.
It certainly does mean minister, but only a Minister of State, which a minister plenipotentiary is not. Glimpses of Life and Manners in Persia
From right: Minister Plenipotentiary of the Embassy of the Syrian Arab Republic, Interpreter Wang Qian.
Nevertheless, he accepted the appointment as minister plenipotentiary to France and on July 5, 1784, departed for Europe where he remained until 1789.
Appointed minister plenipotentiary to Prussia by President Andrew Johnson in 1867, he lived in Berlin for the next seven years.

The Department of External Affairs in Dublin specified it did not want a Nazi party member as German minister plenipotentiary to Ireland.
He was promoted from minister plenipotentiary to full ambassador.
El-Orabi served as minister plenipotentiary and deputy chief of mission at the Egyptian Embassy in Tel Aviv from 1994 to 1998.