Arachidonic acid


an essential fatty acid, C 20 H 32 O 2 , found in the lipids of most tissues, that is a precursor in the synthesis of prostaglandins, prostacyclins, and related effectors.
noun
a fatty acid occurring in animal cells: the metabolic precursor of several groups of biologically active substances, including prostaglandins

arachidonic acid ar·a·chi·don·ic acid (ār’ə-kĭ-dŏn’ĭk)
n.
An unsaturated fatty acid found in animal fats, that is essential in human nutrition and is a precursor in the biosynthesis of some prostaglandins.

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