Definition of "lighting-up" [lighting-up]

• Turning lights on (adjective)

WordNet. Princeton University. 2010.

• "I cleaned up my room and sat at the window watching the red and gold of one of the most glorious of winter sunrises, and the slow lighting-up of one peak after another."
• "I did question the idea behind telling the visually impaired the ‘lighting-up times’ though …"
• "Under-18s would also be excluded from designated smoking areas, such as the lighting-up sections of restaurants."