1. a luminous halo or ring of light appearing opposite the sun in the sky, typically seen in polar regions
Usage: meteorological; plural form

Examples

• The researchers observed beautiful anthelia during their Arctic expedition.
• Anthelia are optical phenomena caused by ice crystals in the atmosphere.
• The photographer captured stunning anthelia against the polar sky.
• These luminous rings, called anthelia, appear when sunlight interacts with atmospheric ice.
• Anthelia are most commonly seen in cold climates with specific atmospheric conditions.