noun
great emperor; ... the Great
Title used for historically significant emperors, often posthumously. In English, it corresponds to epithets like 'the Great' (e.g., Alexander the Great).
アレクサンドロス大帝は広大な帝国を築いた。
Alexander the Great built a vast empire.
大帝と呼ばれる皇帝は歴史上数少ない。
There are only a few emperors in history who are called 'the Great'.