noun
- A bright spot or halo that appears beside the moon, similar to a sundog; a lunar halo or mock moon.
Usage: meteorology; also called paraselene
Examples
- On the cold winter night, a moondog appeared on either side of the full moon.
- The moondog was caused by light refracting through ice crystals in the upper atmosphere.
- Astronomers explained that the moondog phenomenon is similar to the sundog effect seen during the day.
- The bright moondog was visible for several hours as the moon rose higher in the sky.