Longman Dictionary of Contemporary English homepage

illumination

 noun
     
il‧lu‧mi‧na‧tion formal
1 [uncountable] lighting provided by a lamp, light etc:
White candles, the only illumination, burned on the table.
soft illumination
2 [countable usually plural]TCN a picture or pattern painted on a page of a book, especially in the past:
the illuminations in a medieval manuscript
3

illuminations

British English a show of coloured lights used to make a town bright and colourful:
the Blackpool illuminations
4 [uncountable and countable] formal a clear explanation or understanding of a particular subject
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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