What does 帝国 mean?
帝国 is a Japanese noun meaning “empire” in English. It is written as 帝国 in kanji, ていこく in hiragana, and teikoku in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
イギリス式の朝食はイギリス帝国の建設者たちによって流行らせたものだ。
The English breakfast was made popular by the architects of the British Empire.