arachidonic acid

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ar·a·chi·don·ic acid

 (ăr′ə-kĭ-dŏn′ĭk)
n.
An unsaturated fatty acid, C20H32O2, present in animal fats and synthesized by the body from linoleic acid, that is essential in human nutrition and is a precursor in the biosynthesis of some prostaglandins.

[From arachidic, of the groundnut, from New Latin Arachis, groundnut genus, from Greek arakis, arakid-, diminutive of arakos, a leguminous plant.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

arachidonic acid

(ˌærəkəˈdɒnɪk)
n
(Biochemistry) a fatty acid occurring in animal cells: the metabolic precursor of several groups of biologically active substances, including prostaglandins
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Although the predominant dienoic and tetraenoic acids are known to be linoleic and arachidonic acids (all cis 9,12-octadecadienoic acid and all cis 5,8,11,14-eicosatetraenoic acid), the method does not resolve other isomers.
Arachidonic acid (5,8,11,14-eicosatetraenoic acid), a member of the omega-6 poly-unsaturated fatty acids, was found to be an effective stimulator of human prostate cancer cell growth in vitro at micromolar concentrations.
# Double Common name #C Bonds Scientific name Palmitic Acid 16 0 hexadecanoic acid Palmitoleic Acid 16 1 9-hexadecenoic acid Stearic Acid 18 0 octadecanoic acid Oleic Acid 18 1 9-octadecenoic acid Vaccenic Acid 18 1 11-octadecenoic acid Linoleic Acid 18 2 9,12-octadecadienoic acid Alpha-Linolenic 18 3 9,12,15-octadecatrienoic acid Acid (ALA) Gamma-Linolenic 18 3 6,9,12-octadecatrienoic acid Acid (GLA) Arachidic Acid 20 0 eicosanoic acid Gadoleic Acid 20 1 9-eicosenoic acid Arachidonic Acid (AA) 20 4 5,8,11,14-eicosatetraenoic acid EPA 20 5 5,8,11,14,17-eicosatetraenoic acid Behenic acid 22 0 docosanoic acid Erucic acid 22 1 13-docosenoic acid DHA 22 6 4,7,10,13,16,19-docosahexaenoic acid Lignoceric acid 24 0 tetracosanoic acid Table II.

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