The temperature at which one component of a mixture of liquids begins to solidify (or a mixture of liquids starts to become immiscible) on cooling, resulting in visible cloudiness; as for example in diesel fuel in freezing temperatures; the consolute point
The temperature at which paraffin begins to separate from waxy oils during cooling (flocculation) Attention must therefore be paid to frost protection when installing storage tanks and pipelines because otherwise pumps, filters or even the pipelines can become blocked up by floccules in the heating oil at correspondingly low temperatures
the temperature at which waxy crystals in an oil or fuel form a cloudy appearance Cloud point is an indicator of the tendency of the oil to plug filters or small orifices at cold operating temperatures