精油(essential oils)是以芳香植物的花、花蕾、叶、茎、枝、皮、果实、籽、木、根以及因生理性或病理性的分泌物为原料,经水蒸气蒸馏、干馏、溶剂萃取、压榨、脂吸和超临界CO2萃取等工艺提取的具有一定香气或香味特征的挥发性油状物质的统称。因为精油具有挥发性,与杏仁油和椰子油等油脂在性质上完全不同,又可称为挥发油(Volatile Oils)。 Essential oils are made from the essential oils of flowers, buds, leaves, stems, branches, skins, fruits, seeds, wood and roots of aromatic plants, as well as physiological or pathological secretions as raw materials, by steam distillation, Extraction, squeezing, fat absorption and supercritical CO2 extraction and other processes have certain aroma or scent of volatile oily substances collectively. Because of its volatility, essential oils are completely different in nature from those of almond oil and coconut oil. They are also known as Volatile Oils.