A zealous reformer, born at Wildehausen, in Switzerland, 1487. He studied the learned languages at Basle and Berne, and applied himself to philosophy at Vienna, and took his degree of doctor of divinity, at Basle, 1505. For ten years he acquired popularity as public preacher at Glaris, and in 1516 he was invited to Zurich to undertake the office of minister. The tenets of Luther, which were now propagated in Germany, encouraged the Swiss preacher to oppose the sale of indulgences, and to regard them as impositions from the court of Rome upon the superstitious credulity of the people. Undaunted in the publication of his opinions, he continued to increase the number of his adherents, and in 1523 he assembled the senate and the clergy of Zurich, and presented before them in sixty-seven propositions the minute articles of his faith. Though opposed by the bishop of Constance, his doctrines were adopted by the full senate, and he was exhorted to preach the word of God, whilst all pastors were forbidden to teach any thing but what could be proved by the gospel. Another synod still more powerfully favored the cause of Zuinglius and of truth; images and relics were removed from churches, processions were forbidden, and the greater part of the outward worship and ceremonies of the church of Rome was abolished. While, however, successful in the establishment of his doctrines in the canton of Zurich, Zuinglius met with violent opposition in the other members of the Swiss confederacy, and, after the fruitless conferences of Baden between OEcolampadius on the part of Zurich, and of Eckius on the part of the Catholics, both sides had recourse to arms. In one of the first encounters, the great champion of the reformation was slain, 11th October, 1531. As a leader, Zuinglius displayed great firmness, deep learning, and astonishing presence of mind. Though he opposed the doctrines of the Romish church, he greatly differed from the German reformer, and each, unhappily, paid little respect to the opinions of the other. His followers continued to increase; and in bearing his name they maintained doctrines on original sin, and on grace, which were rejected by the other seceders from the jurisdiction of Rome. According to Zuinglius, salvation was extended not only to infants, who died before baptism, but to heathens of a virtuous and moral life. Some alterations were afterwards introduced by Calvin, by Beza, and others; but whilst the proselytes to these new opinions acquired the name of Calvinists in France, and in other parts of Europe, the Zuinglians, who firmly adhered to the tenets of their founder, assumed the appellation of Sacramentarians. The works of Zuinglius, as a controversialist, were respectable, chiefly written in German, and were comprehended in four volumes, folio.