Medical Definition of illumination
1: the action of supplying or brightening with light or the resulting state
2: the luminous flux per unit area on an intercepting surface at any given point—called also illuminance
Learn More about illumination
Dictionary: Definition of "illumination" Thesaurus: All synonyms and antonyms for "illumination" Spanish Central: Translation of "illumination" Nglish: Translation of "illumination" for Spanish speakers Britannica English: Translation of "illumination" for Arabic speakers
Seen and Heard
What made you want to look up illumination? Please tell us where you read or heard it (including the quote, if possible).