ˌdīəˈbäləjē noun
or di·a·bo·lol·o·gy ˌdīəbəˈläl-, (ˌ)dīˌabəˈläl-
( -es )
Etymology: diabology blend of diabol- and -logy; diabolology from diabol- + -logy
1. : the study of the devil or of belief in devils
2. : the theory or doctrine of devils : devil lore