1. lights up or brightens with light
Usage: third person singular present tense of ‘illumine’; literary
2. clarifies or explains something; makes clear or understandable
Usage: third person singular present tense of ‘illumine’; literary

Examples

• The morning sun illumines the valley below.
• A single candle illumines the dark room.
• Her wisdom illumines even the most complex problems.
• The lighthouse illumines the rocky coastline.
• His teaching illumines difficult concepts for students.
• The fire illumines their faces in the darkness.