Protestant UK /ˈpɹɒtɪstənt/US /ˈpɹɑtɪstənt/noun 2adjective 1forms 3phrases 1 noun2 •A member of any of several Christian denominations which separated from the Roman Catholic Church based on theological or political differences during the Reformation (or in some cases later). •(historical) A member of the Church of England or Church of Ireland, as distinct from Protestant nonconformists or dissenters.MR. SEXTON said, he had always understood that the difference between Protestants and Presbyterians was not a difference of creed, but as to episcopacy and practice. — 1893 adjective1 •Of or pertaining to several denominations of Christianity that separated from the Roman Catholic Church based on theological or political differences during the Reformation.It is not perhaps too much to say, that a more harmonious, a more decorous, a more loyal, a more Protestant, a more Christian meeting, never took place within the walls of our ancient city. — 1840 formsProtestants · more Protestant · most Protestant Phrases with Protestant Protestant work ethicA Calvinist value emphasizing the necessity of constant labor in a person's calling as a sign of personal salvation.