'Illuminati' definitions:

Definition of 'Illuminati'

From: GCIDE

Illuminati \Il*lu`mi*na"ti\, n. pl. [L. illuminatus. See Illuminate, v. t., and cf. Illuminee.] Literally, those who are enlightened; -- variously applied as follows: [1913 Webster]
1. (Eccl.) Persons in the early church who had received baptism; in which ceremony a lighted taper was given them, as a symbol of the spiritual illumination they has received by that sacrament. [1913 Webster]
2. (Eccl. Hist.) Members of a sect which sprung up in Spain about the year 1575. Their principal doctrine was, that, by means of prayer, they had attained to so perfect a state as to have no need of ordinances, sacraments, good works, etc.; -- called also Alumbrados, Perfectibilists, etc. [1913 Webster]
3. (Mod. Hist.) Members of certain associations in Modern Europe, who combined to promote social reforms, by which they expected to raise men and society to perfection, esp. of one originated in 1776 by Adam Weishaupt, professor of canon law at Ingolstadt, which spread rapidly for a time, but ceased after a few years. [1913 Webster]
4. Also applied to: (a) An obscure sect of French Familists; (b) The Hesychasts, Mystics, and Quietists; (c) The Rosicrucians. [1913 Webster]
5. Any persons who profess special spiritual or intellectual enlightenment. [1913 Webster]