1. A whitish or colorless arc resembling a rainbow, formed by sunlight shining through fog or mist.
Usage: Also called a white rainbow or fog rainbow.; Occurs when water droplets in fog are too small to disperse light into distinct colors.

Examples

• On the misty morning, a delicate fogbow appeared in the sky above the valley.
• Unlike a traditional rainbow, the fogbow had no visible colors.
• The photographer captured a rare fogbow forming over the coastal cliffs.
• Fogbows are most commonly seen in areas with frequent fog and bright sunlight.
• The fogbow faded as the sun climbed higher and the mist began to clear.