Definition of arachidonic acid in English:

arachidonic acid


  • 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.

    • ‘The fats in animal products break down into arachidonic acid, a pro-inflammatory fatty acid.’
    • ‘Psoriatic plaques have been shown to increase arachidonic acid and leukotriene levels compared to normal skin.’
    • ‘The endothelium prevents platelets from adhering by manufacturing prostacyclin from arachidonic acid.’
    • ‘Those essential nutrients - including taurine, arachidonic acid, and vitamin A - abound in meat.’
    • ‘Enzyme inhibition prevents the formation of thromboxane A 2 from arachidonic acid.’


Early 20th century: arachidonic formed irregularly from arachidic (a saturated fatty acid) + -one + -ic.


arachidonic acid

/ˌerəkəˌdänik ˈasəd/