1. (noun) the theological system of any of the churches of western Christendom that separated from the Roman Catholic Church during the Reformation

• anabaptism
• anglicanism
• arminianism
• baptistic doctrine
• calvinism
• christian science
• congregationalism
• evangelicalism
• fundamentalism
• lutheranism
• mennonitism
• methodism
• mormonism
• pentecostalism
• predestinarianism
• presbyterianism
• puritanism
• trinitarianism
• unitarianism
• wesleyanism
• wesleyism

1. (noun) the theological system of any of the churches of western Christendom that separated from the Roman Catholic Church during the Reformation

• christian religion
• christianity