1. present participle of illuminate; lighting up or brightening with light
2. present participle of illuminate; making clear or easier to understand

Examples

• The morning sun was illumining the entire valley.
• Candles were illumining the dark hallway.
• The teacher’s examples were illumining the difficult concept.
• Her research is illumining new aspects of the problem.
• The lighthouse beam was illumining the rocky coastline.
• His speech was illumining the importance of education.