arachidonic acidyoudaoicibaDictYouDict[arachidonic acid 词源字典]
"A polyunsaturated fatty acid present in animal fats. It is important in metabolism, especially in the synthesis of prostaglandins and leukotrienes, and is an essential constituent of the diet", Early 20th century: arachidonic formed irregularly from arachidic (a saturated fatty acid) from Latin arachis, see arachis oil, + -one + -ic.[arachidonic acid etymology, arachidonic acid origin, 英语词源]