arachidonic acid

American  

[ar-uh-ki-don-ik, ar-] / ˈær ə kɪˈdɒn ɪk, ˌær- /

noun

Biochemistry.

1. 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.

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arachidonic acid British  

/ ˌærəkəˈdɒnɪk /

noun

1. a fatty acid occurring in animal cells: the metabolic precursor of several groups of biologically active substances, including prostaglandins

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Etymology

Origin of arachidonic acid

First recorded in 1910–15; arachid(ic) + -onic

Example Sentences

"Nestle has undertaken testing of all arachidonic acid oil and corresponding oil mixes used in the production of potentially impacted infant nutrition products," it said on its website.

From Barron's • Jan. 5, 2026

Given its presence in human milk, arachidonic acid is considered essential for infant brain development and is added to infant formula in many countries.

From Science Daily • Apr. 30, 2024

There is some evidence linoleic acid can be converted to arachidonic acid in the body and this may play a role in inflammation.

From Salon • Feb. 21, 2024

However, other research doesn't support the idea reducing dietary linoleic acid affects the amount of arachidonic acid in your body.

From Salon • Feb. 21, 2024

The reasoning is that linoleic acid turns into a different fatty acid, arachidonic acid, in the body, and arachidonic acid is a building block for compounds that cause inflammation.

From Seattle Times • Mar. 6, 2023