Definition of illuminatus:
(n) :
A member of certain associations in Europe who combined to promote social reform in pursuit of perfection; especially one originated in 1776 by Adam Weishaupt.
(n) :
A member of an alleged global elite secret society which has as its ultimate objective the subjugation of humanity (world domination or New World Order).
(n) :
A member of any of various societies, sects or other people claiming religious or intellectual enlightenment.
(n) :
A member of the early church who had received baptism and been given a lighted taper as a symbol of the spiritual illumination they had received.
(n) :
A member of a Spanish sect of the sixteenth century, who believed that, by means of prayer, they had attained so perfect a state as to have no need of ordinances, sacraments, good works, etc.; the Alumbrados or Perfectibilists.
(n) :
A member of an obscure sect of French familists.