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arachidonic acid
noun
ar·a·chi·don·ic acid
ˌa-rə-kə-ˈdä-nik-
ˌer-ə-
: 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
Recent Examples on the Web
Bobbie Baby Organic Powder Infant Formula also has arachidonic acid (ARA), which is another fatty acid that, together with DHA,6 supports infant growth and development.
—Lainey Younkin, Ms, Rd, Parents, 15 Mar. 2024
Bobbie Baby Organic Powder Infant Formula also has arachidonic acid (ARA), which is another fatty acid that, together with DHA, supports infant growth and development.
—Lainey Younkin, Ms, Rd, Parents, 15 Mar. 2024
But too many of these fatty acids can cause inflammation when the body ultimately breaks them down into arachidonic acid, which lowers the body’s pain threshold.
—Sandee Lamotte, CNN, 12 Oct. 2022
According to PetMD, cats also need higher proportions of protein in their diet than dogs, as well as taurine, arachidonic acid, vitamin A and niacin.
—Jacob Livesay, USA TODAY, 22 July 2022
But the concentrations of vitamin A and arachidonic acid weren't even measured.
—Marta Zaraska, chicagotribune.com, 10 July 2019
There is arachidonic acid, an omega-6 fatty acid the body uses to make pro-inflammatory local hormones.
—Bryant Stamford, The Courier-Journal, 3 May 2018
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Word History
Etymology
New Latin Arachid-, Arachis + English -onic (as in gluconic acid)
First Known Use
1913, in the meaning defined above
Dictionary Entries Near arachidonic acid
Cite this Entry
“Arachidonic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arachidonic%20acid. Accessed 23 Nov. 2024.
Medical Definition
arachidonic acid
noun
ar·a·chi·don·ic acid
ˌar-ə-kə-ˌdän-ik-
: 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
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
Fish and other vertebrates also rely on arachidonic acid, another fat, to make compounds for managing stress and immunity.—Janet Raloff, Science News
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
—abbreviation AA, ARA
More from Merriam-Webster on arachidonic acid
Britannica.com: Encyclopedia article about arachidonic acid
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