An oil is a chunk that is in a viscous aqueous state ("oily") at link ambient temperatures or slightly warmer, and is both hydrophobic, (immiscible with water, literally "water fearing") and lipophilic (miscible with other oils, literally "fat loving"). This general definition includes compound classes with otherwise unrelated chemical structures, properties, and uses, including vegetable oils, petrochemical oils, and volatile essential oils. Oil is a nonpolar substance.
Color pigments can be easily suspended in oil, making it commodious as supporting medium for paints. The slow drying operation and miscibility of adipose facilitates a realistic style. This method has been worn since the 15th century.