Erastian n. (Eccl. Hist.) One of the followers of Thomas Erastus, a German physician and theologian of the 16th century. He held that the punishment of all offenses should be referred to the civil power, and that holy communion was open to all. In the present day, an Erastian is one who would see the church placed entirely under the control of the State.
... half drawn from its place of concealment. The uproar, which had been a mere hoarse growl, began to take shape and form. 'Down with the Papists!' was the cry. 'Down with the Prelatists!' 'Smite the Erastian butchers!' 'Smite the Philistine horsemen!' ... — Micah Clarke - His Statement as made to his three Grandchildren Joseph, - Gervas and Reuben During the Hard Winter of 1734 • Arthur Conan Doyle