protestantism has definitions from the fields of religion,Christianity
1
[ noun ] (religion,Christianity) the theological system of any of the churches of Western Christendom that separated from the Roman Catholic Church during the Reformation

Used in print

(Schubert Ogden, Christ Without Myth....)

The same thing is also evidenced by the extreme `` culture Protestantism '' so often observed to characterize the preaching and teaching of the American churches .

*