/ ɪnˈlaɪtnmənt; NAmE / noun
1.
[ U ] knowledge about and understanding of sth; the process of understanding sth or making sb understand it :
The newspapers provided little enlightenment about the cause of the accident.
spiritual enlightenment
2.
the Enlightenment [ sing. ] the period in the 18th century when many writers and scientists began to argue that science and reason were more important than religion and tradition