1560s, in religion, "pertaining to the office, character, or habits of a clergyman;" 1650s, in politics, "of or pertaining to a minister or ministry of the state;" in some uses from Middle French ministériel and directly from Medieval Latin ministerialis "pertaining to service, of a minister," from Latin ministerium "office, service, attendance, ministry," from minister "inferior, servant, priest's assistant" (see minister (n.)). In some cases probably directly from minister or ministry. Related: Ministerially.
