The present unique philosophical dictionary, the only one of its kind in the world, is now available in its second revised edition, expanded by approximately 20,000 entries. It contains around 65,000 keywords from all areas of philosophy, including current and philosophically relevant terms from adjacent scientific fields. Concise, informative, and clear details about the subject area and context categorize all entries according to their meaning and clarify their usage. A differentiated system of cross-references connects the entries and facilitates users in finding the correct translation. This makes it an indispensable tool for students, researchers, and translators for translingual competence in philosophical terminology.