noun
acts in matters of state; constitutional functions of the emperor
A legal term referring to the formal, ceremonial acts performed by the Emperor of Japan as stipulated in the Constitution, such as promulgation of laws and convocation of the Diet. Not used for everyday actions.
天皇の国事行為には、法律の公布や国会の召集などが含まれる。
The Emperor's constitutional functions include promulgation of laws and convocation of the Diet.
Compound of 国事 (kokuji, 'state affairs') and 行為 (kōi, 'act'). The term is a modern legal expression derived from the post-war Constitution of Japan.