Westminster Dictionary Of Theological Terms

What This Dictionary Actually Is

The Westminster Dictionary Of Theological Terms is a reference work that covers the vocabulary used across Christian theology, church history, and religious studies. It was published by Westminster John Knox Press and is one of those books you keep on your desk because looking up a term on Google usually gives you three conflicting definitions from people who have not read the primary sources. This one at least points you toward the academic conversation. You can find it through Amazon, Barnes & Noble, or the publisher's website. It also turns up used on AbeBooks if you want to save money rather than wait for a shipping window that stretches into next month. I use it when a graduate student emails me asking what the difference is between hypostasis and ousia, or when someone is writing a paper and needs a definition that is accurate enough to cite without being so technical that it becomes unreadable. The entries are generally one to two paragraphs, with cross-references to related terms scattered throughout the book. That is the core workflow.

Here is the thing most people miss about this dictionary. It is not organized the way you might expect. A lot of theological dictionaries lead with biblical terms and then move outward. This one mixes historical theology, systematic theology, and philosophy of religion in a way that forces you to actually read the entry rather than just scan the first line. The entry on justfication, for example, will sit between entries on indulgence and kenosis. You have to engage with the material rather than treating it like a lookup table. That is deliberate and it matters for how you use the book effectively. I ran into a specific problem a while back that illustrates why this design choice is both useful and annoying. I was researching a question about the Council of Chalcedon and needed the precise distinction between nature and person as used in the Christological debates. I looked up "nature" and found a definition that was accurate but incomplete for my purposes. The entry on "person" gave more of what I needed, but it was buried in a different section. I ended up going back and forth between the two entries for about twenty minutes before I realized the dictionary was designed to force exactly this kind of cross-referencing. Once I accepted that, I worked through the cross-references at the bottom of each entry and found the relevant discussion on the hypostatic union. It took longer than a quick lookup, but the answer was substantially better than anything I would have gotten from a single-entry search. There is a practical method for using this dictionary that most beginners skip. Instead of searching for the term you are currently stuck on, look up a related term that you already understand and let the cross-references pull you toward the one you need. The dictionary is structured so that the connections between entries carry as much information as the entries themselves. If you treat it as a flat reference tool you are underusing it. If you read it more like a map you get more out of it.

The definitions are generally solid, but they are not always neutral. This is a Protestant publishing house and the entries reflect that perspective. When you read the entry on transubstantiation, for instance, the explanation is technically correct but framed in a way that assumes the reader is evaluating the Catholic position from outside it. It is honest about that orientation but it means you should not rely on this dictionary alone if you need a sympathetic presentation of a position you disagree with. For that you would be better off consulting a companion volume from a different tradition or going directly to the primary source. The index is serviceable but not comprehensive. It lists major terms and some secondary concepts, but if you are looking for something like perichoresis you might find it listed under procession instead, or you might not find it at all depending on which printing you have. The ISBN for the most common edition is 978-0664256562. That is worth knowing because different editions have different entry coverage and the paperback version cuts some of the longer historical entries compared to the hardcover. Here is a blunt assessment of where this dictionary falls short. It does not cover contemporary theological movements well. If you are looking for entries on liberation theology, postmodern theology, or process theology the coverage is thin or absent. It also does not include non-Christian religious terms, which is a deliberate editorial decision but a limitation if you are working in interreligious studies. The historical scope runs roughly from the early church through the Reformation and then tapers off after the nineteenth century. Modern theological debates get less attention than you might expect.

If you need coverage of those areas you should pair this with the Oxford Dictionary of Christian Theology or the Encyclopedia of Theology edited by Kenneth Surin. Neither is perfect but together they fill the gaps that Westminster leaves open. The Westminster volume is best used as a first-stop reference for classical theological terms, not as a comprehensive theological encyclopedia. That is not a failure of the book. It is a failure of expectation if you treat it as something it was never designed to be.