moon dog
nounEtymology From moon + dog; metaphorically refers to the bright spots of light that appear to "dog" or follow the real moon, much like a dog follows its owner.
1
Climatology, Meteorology, Natural sciences A bright, circular spot, sometimes seen on a lunar halo, caused by refraction through ice crystals.
- Synonyms
- paraselene, mock moon
- Related terms
- 22° halo