Lu·ther (lthər), Martin 1483-1546.
German theologian and leader of the Reformation. His opposition to the corruption of the papacy and his belief in salvation through faith alone caused his excommunication from the Catholic Church (1521). His theological writings, reformation of liturgy, and German translation of the Bible (1534) resulted in the establishment of the Lutheran Church.
(click for a larger image)Martin Luther
1529 oil on wood portrait by Lucas Cranach the Elder
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.