Martin Heidegger's thinking is a complex, and his terminology is as nuanced, as any thinker in the history of philosophy. As the historian of philosophy par excellence, he also exhibits both a greater appreciation and mastery of previous thinkers than any almost any other philosopher before or since. The Historical Dictionary of Heidegger's Philosophy, Third Edition addresses this dual challenge of reading, understanding, and interpreting Heidegger's vast writings. The book provides a comprehensive and detailed account of the key terms shaping Heidegger's philosophy, as well as outlining the development of his thought spanning the entirety of his career spanning almost sixty years. The Dictionary also includes a discussion of Heidegger's seminal writings, the spanning his entire Gesamtausgabe (Complete Edition) up through volume 99 (of the projected 102 volumes). This third edition of Historical Dictionary of Heidegger's Philosophy, Third Edition contains a chronology, an introduction, appendixes and an extensive bibliography. The dictionary section has over 800 cross-referenced entries that provides a clear and comprehensive exposition of the key developments in his life and his thought. This book is an excellent resource for students, researchers, and anyone wanting to know more about Martin Heidegger.