The Collaborative International Dictionary of English v.0.48:

Hobbism \Hob"bism\, n.
   The philosophical system of Thomas Hobbes, an English
   materialist (1588-1679); esp., his political theory that the
   most perfect form of civil government is an absolute monarchy
   with despotic control over everything relating to law,
   morals, and religion.
   [1913 Webster]