noun Light, or the act of providing light.
- A single lamp gave just enough illumination to read by.
- The city installed brighter street lights to improve illumination along the path.
- The stage lighting provided dramatic illumination during the final scene.
noun Ornamental decoration added to a manuscript or book.
- The monk spent weeks painting a detailed illumination at the top of the page.
- The museum displays a medieval book with beautiful illumination in red and blue.
- The gold-leaf illumination on the page had survived remarkably well.
noun A moment of insight or understanding.
- Reading that book brought a moment of illumination about why she kept making the same mistake.
- After hours of confusion, a simple diagram offered real illumination for the students.
- Her explanation brought sudden illumination to a topic he'd struggled with for years.
