An Ambassador A minister of the highest rank sent to a foreign court to represent there his sovereign or country. (Sometimes called ambassador-in-residence) An official messenger and representative. A corporate representative, often the public face of the company. Usage notesEdit In English the preferred construction is (Nationality) ambassador to (Country) (the French ambassador to the United States) or ambassador of (Sending Country) to (Receiving Country) (the ambassador of France to the United States).