Adiabatic fog is a specific type of fog characterized by particular atmospheric conditions.
According to its definition, adiabatic fog is a layer filled with suspended liquid water droplets, extending from an upper boundary all the way down to the surface, with a saturated adiabatic temperature profile. This means the temperature within the fog layer decreases with altitude at a rate defined by the saturated adiabatic lapse rate, and the air is saturated with water vapor.