Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Latin
Origin: , past participle of illuminare, from lumen 'light'

illuminate

verb
     
il‧lu‧mi‧nate also illumine [transitive]
1 to make a light shine on something, or to fill a place with light:
A single candle illuminated his face.
At night the canals are beautifully illuminated.
2 formal to make something much clearer and easier to understand:
The report illuminated the difficult issues at the heart of science policy.

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