The Collaborative International Dictionary of English v.0.48:
Ministerially \Min`is*te"ri*al*ly\, adv. In a ministerial manner; in the character or capacity of a minister. [1913 Webster]WordNet (r) 3.0 (2006):
ministerially adv 1: in the manner of a minister or clergyman; "he was called on to visit ministerially on the dying man"