en ‧ light ‧ en ‧ ment /ɪnˈlaɪtnmənt/ BrE AmE noun [uncountable]
1 . formal when you understand something clearly, or when you help someone do this:
Isabel looked to Ron for enlightenment.
2 . the final stage reached in the Buddhist and Hindu religions when you no longer suffer or feel desire and you are at peace with the universe:
the quest for spiritual enlightenment