Calvinism (n.)
1560s, "religious doctrines and theology of John Calvin" (1509-1564), French Protestant reformer and theologian. With -ism. Alternative form Calvinian was in use in 1566. Later extended broadly to positions he did not hold. Generalized association with stern moral codes and predestination is attested at least since 1853. Related: Calvinist; Calvinistic.