Definition of arachidonic acid in English:

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arachidonic acid

Pronunciation: /ˌerəkəˌdänik ˈasəd/


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.
  • Alternative name: eicosa-5,8,11,14-enoic acid; chemical formula: C19H31COOH.
Example sentences
  • Those essential nutrients - including taurine, arachidonic acid, and vitamin A - abound in meat.
  • Psoriatic plaques have been shown to increase arachidonic acid and leukotriene levels compared to normal skin.
  • The fats in animal products break down into arachidonic acid, a pro-inflammatory fatty acid.


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

For editors and proofreaders

Syllabification: ar·a·chi·don·ic ac·id

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