DEAN. An ecclesiastic next in degree to a Bishop. He is the head of a corporate body called a Chapter, attached to a Cathedral, and has the direction of the Cathedral services. Deans of Peculiars have no Chapters. The Dean  of a College at Oxford or Cambridge is the officer appointed to maintain discipline.*

The Dean  of Faculty  presides over meetings of the particular faculty of which he is Dean. It is an office in most ancient, and some modern universities.

The Dean of Christ Church, Oxford, is the Head both of the Cathedral, and the College.