in ‧ sti ‧ ga ‧ tion /ˌɪnstəˈɡeɪʃ ə n, ˌɪnstɪˈɡeɪʃ ə n/ BrE AmE noun [uncountable]
1 . at sb’s instigation ( also at the instigation of somebody ) formal because of someone’s suggestion, request, or demand:
an inquiry set up at the instigation of the White House
2 . the act of starting something