invocation
in.vo.ca.tion \.in-v*-'ka--sh*n-\ \-shn*l, -sh*n-*l\ n [ME invocacioun, fr. MF invocation, fr. L invocation-, inv]ocatio, fr. invocatus, pp. of invocare 1a: the act or process of petitioning for help or support : SUPPLICATI ON; specif, often cap : an invocatory prayer (as at the beginning of a service of worship) 1b: a calling upon for authority or justification 2: a formula for conjuring : ENFORCEMENT - in.vo.ca.tion.al aj