From Longman Dictionary of Contemporary Englishambassadoram‧bas‧sa‧dor /æmˈbæsədə $ -ər/ ●●○ noun [countable] 1 PGOan important official who represents his or her government in a foreign countryambassador to the US ambassador to Spain2 someone who represents a particular sport, business etc because they behave in a way that people admireambassador for He has made some good films and he is a good ambassador for the industry. —ambassadorial /æmˌbæsəˈdɔːriəl/ adjective relations at ambassadorial level
Examples from the Corpus
ambassador• He was, after all, an ambassador for his country.• Ms Takahashi was the first Japanese woman ever to be appointed ambassador to a foreign country.• Perhaps her greatest asset as ambassador was her access to President Clinton, whom she had known for many years.• Sir Auckland Geddes is the British ambassador to Washington, • In the next few months, the two countries are to exchange ambassadors.• Act the ambassador rather than the captain of cavalry.• Mobuto spoke briefly to the Zimbalan ambassador in Swahili then beckoned the tall bodyguard towards him.Origin ambassador (1300-1400) French ambassadeur, from an unrecorded Medieval Latin ambactiator, from Latin ambactus “vassal” 