arachidonic acid

noun
ar·​a·​chi·​don·​ic acid | \ˌar-ə-kə-ˈdä-nik- \

Definition of arachidonic acid 

: a liquid unsaturated fatty acid C20H32O2 that occurs in most animal fats, is a precursor of prostaglandins, and is considered essential in animal nutrition

Examples of arachidonic acid in a Sentence

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There is arachidonic acid, an omega-6 fatty acid the body uses to make pro-inflammatory local hormones. Bryant Stamford, The Courier-Journal, "The high-fat keto diet isn't the worst for you, it's definitely not great either," 3 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arachidonic acid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of arachidonic acid

1913, in the meaning defined above

History and Etymology for arachidonic acid

New Latin Arachid-, Arachis + English -onic (as in gluconic acid)

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a race against time

arach

arachide

arachidonic acid

arachin

arachis

arachis oil

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The first known use of arachidonic acid was in 1913

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arachidonic acid

noun
ar·​a·​chi·​don·​ic acid | \ˌar-ə-kə-ˌdän-ik- \

Medical Definition of arachidonic acid 

: a liquid unsaturated fatty acid C20H32O2 that occurs in most animal fats, is a precursor of prostaglandins and leukotrienes, and is considered essential in animal nutrition In a biological system for the regulation of various cell functions, arachidonic acid plays a unique role as a precursor molecule which is transformed into potent mediators with far-ranging effects.— Bengt Samuelsson, Science, 6 May 1983 The prostaglandins and the leukotrienes share a common origin. They are derived, by two different enzymatic pathways, from arachidonic acid, which is formed in cells whose cell membrane has been disrupted.— Paul D. Buisseret, Scientific American, August 1982 Fish and other vertebrates also rely on arachidonic acid, another fat, to make compounds for managing stress and immunity.— Janet Raloff, Science News, 13 May 2000 Pulmonary hypertension is thought to be due to activation and release of vasoactive mediators, including arachidonic acid metabolites, accompanied by diffuse pulmonary microvascular thrombosis— Harriet Kitzman et al., The Journal of the American Medical Association, 19 Apr. 2000 abbreviation AA, ARA

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