American English

Definition of illumination noun from the Oxford Advanced American Dictionary



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  1. 1[uncountable, countable] light or a place that light comes from The only illumination in the room came from the fire.
  2. 2[countable, usually plural] a colored decoration, usually painted by hand, in an old book
  3. 3[uncountable] (formal) understanding or explanation of something spiritual illumination In that flash of illumination, he realized where he had gone wrong.
See the Oxford Advanced Learner's Dictionary entry: illumination