illumination

noun

1. an act or instance of illuminating.
2. the fact or condition of being illuminated.
3. a decoration of lights, usually colored lights.
4. Sometimes illuminations. an entertainment, display, or celebration using lights as a major feature or decoration.
5. intellectual or spiritual enlightenment.
6. Also called illuminance, intensity of illumination. Optics. the intensity of light falling at a given place on a lighted surface; the luminous flux incident per unit area, expressed in lumens per unit of area.
7. a supply of light: a source of illumination.
8. decoration of a manuscript or book with a painted design in color, gold, etc.
9. a design used in such decoration.

noun

1. the act of illuminating or the state of being illuminated
2. a source of light
3. (often plural) mainly British a light or lights, esp coloured lights, used as decoration in streets, parks, etc
4. spiritual or intellectual enlightenment; insight or understanding
5. the act of making understood; clarification
6. decoration in colours, gold, or silver used on some manuscripts or printed works
7. physics another name (not in technical usage) for illuminance