WordReference Random House Unabridged Dictionary of American English © 2025
il•lu•mi•nism
(i lo̅o̅′mə niz′əm),USA pronunciation n.
il•lu′mi•nist, n.
- Religionthe doctrines or claims of Illuminati.
- Religiona doctrine of enlightenment.
- illumin(ati) + -ism 1790–1800