crypto-calvinism

from The Century Dictionary.

• noun Concealed Calvinism: an opprobrious term used, during the controversy concerning the doctrine of the Lord's Supper (1552–74), to designate the teaching of Melanchthon, who favored the Calvinistic view of the spiritual presence of Christ, as opposed to the Lutheran view.
• noun Applied, in 1881, to the doctrine of unconditional election (semi-Calvinistic) held by Missouri Lutherans.