1. plural of radiant; points in the sky from which meteors appear to originate during a meteor shower
Usage: astronomy
2. plural of radiant; things that emit or reflect light or heat in a bright, glowing manner

Examples

• The Perseid meteor shower has one of the most active radiants in August.
• Astronomers track multiple radiants throughout the year to predict meteor activity.
• The constellation Perseus contains the radiant for the famous Perseid meteors.
• Different meteor showers have radiants in various parts of the night sky.
• The radiants of the celestial display illuminated the entire valley.
• Solar panels capture energy from various radiants including direct sunlight.