The term **大帝** is a Classical Chinese honorific compound formed by combining the character **大** (dà), meaning "great" or "grand," with the character **帝** (dì), meaning "emperor," "sovereign," or "divine ruler." It functions as a title, not a mere description, to elevate a specific historical or legendary emperor to a supreme, often mythologized status, implying unparalleled power, authority, and historical significance, such as in **秦始皇大帝** (Emperor Qin Shi Huang) or **凯撒大帝** (Julius Caesar). Its formation follows the common Chinese grammatical structure of a modifier (**大**) preceding a core noun (**帝**) to create a single, exalted conceptual entity.