出典:Wiktionary
Containing the essence of the plant's fragrance.
essential oil (複数形 essential oils)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/10 15:58 UTC 版)
An essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. Essential oils are also known as volatile oils, ethereal oils or aetherolea, or simply as the "oil of" the plant from which they were extracted, such as oil of clove. An oil is "essential" in the sense that it carries a distinctive scent, or essence, of the plant. Essential oils do not form a distinctive category for any medical, pharmacological, or culinary purpose.
essential oil
乳化油.
mint-oil
the oil saponified
croton oil.