illumination

Universal Words noun 1 [U,C] light or a place that light comes from: The only illumination in the room came from the fire. 2 (illuminations) [pl.] (BrE) bright colourful lights used to decorate a town or building for a special occasion: Christmas illuminations 3 [C,usually pl.] a coloured decoration, usually painted by hand, in an old book 4 [U] (formal) understanding or explanation of sth: spiritual illumination * In that flash of illumination, he realized where he had gone wrong.