investiture
noun [ C ] formal uk/ɪnˈves.tɪ.tʃər/ us/ɪnˈves.tə.tʃɚ/
授职典礼;授权仪式
a ceremony in which someone is given an official rank, authority, power, etc.
The investiture of the new president will take place this evening. 新任总统的授权仪式将在今晚举行。
Compare: coronation