chief of state
noun🔊/ˌtʃiːf əv ˈsteɪt/
🔊/ˌtʃiːf əv ˈsteɪt/
(plural chiefs of state)
(North American English)the person who holds the formal title of head of a country, as distinguished from the leader of a government Queen Elizabeth is the chief of state of the United Kingdom. 伊丽莎白女王是英国国家元首。