1. a bright spot that appears in the sky on either side of the sun, caused by the refraction of sunlight through ice crystals in the atmosphere
Usage: meteorology

Examples

• The hikers were amazed to see a bright sundog shining beside the winter sun.
• Sundogs are most commonly visible when the sun is low on the horizon.
• The meteorologist explained that the sundog was caused by ice crystals in cirrus clouds.
• Two sundogs appeared on either side of the sun during the cold morning.
• The photographer captured a stunning image of the sundog against the blue sky.
• Sundogs often create a halo effect around the sun in freezing weather.