NCIt definition : Any oil derived from a plant or from a specific part of a plant.;
Alternative definition : FDA: The organic compounds constituting the esters of glycerol and fatty acids and
their associated organic groups that are produced by a plant, or any of its component
parts, that are generally slippery, combustible, liquid or liquefiable at room temperatures,
soluble in various organic solvents such as ether but not in water.;