]]An oil is any substance that is in a viscous liquid state ("oily") at 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. Etymology Oil is a scientific term, and are used to refer to certain diverse and non related compounds sharing the same physical properties such as viscosity and a hydrophobic nature, while ignoring unrelated compounds. The compounds found in cooking oil are chemically very similar, almost identical, to those found in butter and very different from those found in diesel, but while diesel is an oil, butter is not. Indeed diesel is once again very sim

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