0 a bright spot that appears in the sky on either side of the sun, caused by the refraction (= bending) of light through ice crystals in high cloud:
Sundogs are caused by sunlight passing through flat, six-sided ice crystals high in the troposphere.
Northern lights filled the sky at night, sun dogs during the bitter days.
She often points out things in the sky - phenomena such as sundogs, halos, and unusual cloud shapes.
Sundog installs photovoltaic and solar hot water systems on homes and businesses.
Sundog has attributed its performance to a strong corporate culture.
The colors of the sundog finally merge into the white of the parhelic circle (if the latter is visible).
Sundog is everything a great game should be.
He suggested the cause may have been a sundog.
