1. emitting light without heat, especially light that continues to glow after the source of excitation has been removed
Usage: common in scientific and everyday contexts
2. shining or glowing with a soft, eerie light
Usage: often used descriptively in literature and everyday speech

Examples

• The phosphorescent paint on the watch face glowed in the dark.
• Certain deep-sea creatures are phosphorescent, producing their own light.
• The phosphorescent algae created a magical glow in the ocean water.
• She wore a phosphorescent jacket while jogging at night for safety.
• The phosphorescent stars on the ceiling faded as the room grew brighter.
• Phosphorescent materials are used in emergency exit signs.
• The jellyfish had a beautiful phosphorescent quality that lit up the aquarium.