Merriam-Webster Collegiate Dictionary - theology

 noun  (plural -gies)  Etymology: Middle English theologie, from Anglo-French, from Latin theologia, from Greek, from the- + -logia -logy  Date: 14th century  1. the study of religious faith, practice, and experience; especially the study of God and of God's relation to the world  2.  a. a theological theory or system Thomist ~ a ~ of atonement  b. a distinctive body of theological opinion Catholic ~  3. a usually 4-year course of specialized religious training in a Roman Catholic major seminary