lycanthropy
Concise Oxford English Dictionary © 2008 Oxford University Press:
lycanthropy /lʌɪˈkanθrəpi/
▶noun the mythical transformation of a person into a wolf.
■ archaic a form of madness involving the delusion of being an animal, usually a wolf.
– derivatives
lycanthropic adjective.
lycanthropic adjective.
– origin C16: from mod. L. lycanthropia, from Gk lukanthrōpia, from lukos ‘wolf’ + anthrōpos ‘man’.
'lycanthropy' also found in these Oxford entries:

