arachidonic acid: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “arachidonic acid” mean?
An essential polyunsaturated omega-6 fatty acid, crucial for physiological processes like inflammation and cellular signaling, found in animal fats and some vegetable oils.
Audio
Pronunciation
Definition
Meaning and Definition
An essential polyunsaturated omega-6 fatty acid, crucial for physiological processes like inflammation and cellular signaling, found in animal fats and some vegetable oils.
In biochemistry and nutrition, arachidonic acid serves as a key precursor for eicosanoids (prostaglandins, thromboxanes, leukotrienes), which are signaling molecules involved in inflammation, immunity, and other regulatory functions. It is a major component of cell membrane phospholipids.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling is identical. Pronunciation differences are minor (see IPA).
Connotations
Identical technical/scientific connotations in both varieties.
Frequency
Equally low frequency in general discourse but standard in relevant scientific fields in both regions.
Grammar
How to Use “arachidonic acid” in a Sentence
[Arachidonic acid] is metabolized by [enzyme].[Enzyme] releases [arachidonic acid] from [membrane phospholipids].[Diet] is supplemented with [arachidonic acid].Vocabulary
Collocations
Examples
Examples of “arachidonic acid” in a Sentence
verb
British English
- The enzyme will arachidonate the phospholipid.
- (Note: 'arachidonate' as a verb is extremely rare; 'metabolise/release arachidonic acid' is preferred)
American English
- The enzyme can arachidonate the membrane lipid.
- (Note: 'arachidonate' as a verb is extremely rare; 'metabolize/release arachidonic acid' is preferred)
adverb
British English
- (No standard adverbial form. Not applicable.)
American English
- (No standard adverbial form. Not applicable.)
adjective
British English
- The arachidonic acid pathway is complex.
- Arachidonic acid metabolites were measured.
American English
- The arachidonic acid cascade is a key inflammatory pathway.
- Arachidonic acid derivatives are potent.
Usage
Meaning in Context
Business
Virtually never used, except possibly in highly specialized contexts like pharmaceutical R&D or nutritional supplement marketing.
Academic
Exclusively used in biological sciences, medicine, nutrition, and pharmacology research papers and textbooks.
Everyday
Extremely rare. Might be encountered in advanced nutritional discussions or specific health blogs.
Technical
The primary domain of use. Common in laboratory reports, clinical studies, biochemical pathways, and medical literature.
Vocabulary
Synonyms of “arachidonic acid”
Strong
Neutral
Weak
Vocabulary
Antonyms of “arachidonic acid”
Watch out
Common Mistakes When Using “arachidonic acid”
- Misspelling: 'arachadonic', 'arachnidonic' (confusion with 'arachnid').
- Mispronunciation: Stressing the first syllable heavily (/ˈærək.../) in American English instead of the third.
- Conceptual: Confusing it with 'arachidic acid' (a different, saturated fatty acid).
FAQ
Frequently Asked Questions
It is essential in moderation. It is crucial for normal physiology (brain function, inflammatory response), but excessive levels or metabolism are linked to pro-inflammatory diseases. The context (health status, balance with omega-3s) is key.
It is found predominantly in animal products: organ meats (liver, brain), egg yolks, red meat, and some seafood. It is not typically found in significant amounts in plant foods.
Both are polyunsaturated fatty acids (PUFAs) but from different families (omega-6 vs. omega-3). They often have opposing physiological effects; omega-3s are generally anti-inflammatory, while arachidonic acid-derived eicosanoids are often pro-inflammatory. Balance is important.
It was first isolated from peanut oil (genus *Arachis*). The name derives from 'Arachis' (peanut) + '-ic' (acid-forming) + '-onic' (common suffix for certain fatty acids).
An essential polyunsaturated omega-6 fatty acid, crucial for physiological processes like inflammation and cellular signaling, found in animal fats and some vegetable oils.
Arachidonic acid is usually technical/scientific in register.
Arachidonic acid: in British English it is pronounced /ˌær.ə.kɪˈdɒn.ɪk ˈæs.ɪd/, and in American English it is pronounced /əˌræk.əˈdɑː.nɪk ˈæs.ɪd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “(none)”
Learning
Memory Aids
Mnemonic
Think: 'A RAt CHIDes (scolds) a fatty ACID' to recall the 'arach-' prefix and that it's an acid. The 'idonic' sounds like 'ionic', hinting at its chemical nature.
Conceptual Metaphor
Often conceptualized as a BUILDING BLOCK or PRECURSOR in biochemical pathways, and as a FUEL or TRIGGER for inflammatory processes.
Practice
Quiz
Arachidonic acid is primarily classified as: