Определение demonology в Английский Язык Английский Язык словарь
The study of demons, especially the incantations required to summon and control them
But it wasn't all that strange, because any wizard bright enough to survive for five minutes was also bright enough to realize that if there was any power in demonology, then it lay with the demons.
A treatise on demons; a supposititious science which treats of demons and their manifestations
Demonology is a set of beliefs which says that a particular situation or group of people is evil or unacceptable. the usual deranged Right-wing stereotype of fascist Left demonology