The Cambridge Dictionary of Philosophy by Robert Audi (University of Nebraska, Lincoln)
This is the most authoritative and comprehensive one-volume dictionary of philosophy available in English. It contains over 4,000 entries, which range in length from 100 to 4,000 words. The Dictionary has been written by an international team of over 350 experts, so, rather than offering the limited perspective of a single writer, it distils the collective knowledge of the professional community of philosophers in an accessible manner.The Cambridge Dictionary clearly and concisely defines both technical terms and crucial concepts, and will promote the understanding of philosophy on all levels and across all fields. It includes substantial explanatory articles on all major philosophers as well as hundreds of minor figures. There are expansive, up-to-date overviews of all the important sub-disciplines such as ethics, epistemology, metaphysics, philosophy of mind and logic. No other reference work on philosophy contains so many entries on related subjects such as cognitive science, linguistics, theology, law, history of science and literature.