omega-3 fatty acid
Definition
Noun: A type of polyunsaturated fatty acid characterized by the position of its first double bond in the chemical structure. Specifically, the first carbon-carbon double bond is located three carbons away from the methyl end (the "beginning" or omega end) of the fatty acid chain. These are essential nutrients important for human health.
Usage
This term is used in scientific, nutritional, and medical contexts to refer to a specific class of beneficial dietary fats. * It is typically used as a countable noun (e.g., an omega-3 fatty acid, omega-3 fatty acids). * It often appears in discussions about diet, heart health, brain function, and inflammation.
Examples
- Scientific/Nutritional Context:
- Salmon is an excellent source of omega-3 fatty acids.
- The study examined the effects of the omega-3 fatty acid DHA on cognitive development.
- Flaxseeds contain a plant-based omega-3 fatty acid called ALA.
Advanced Usage
- "Omega-3" as a shorthand: In common usage, the term is often shortened to "omega-3" (functioning as a noun or adjective), though the full term is more precise.
- This supplement is high in omega-3. (Here, "omega-3" is understood to mean omega-3 fatty acids).
- She takes omega-3 capsules daily.
Variants and Related Words
- Omega-3 (n.): A common abbreviated form for "omega-3 fatty acid."
- Polyunsaturated fatty acid (PUFA) (n.): The broader category to which omega-3 fatty acids belong.
- Eicosapentaenoic acid (EPA) (n.): A specific long-chain omega-3 fatty acid found in marine oils.
- Docosahexaenoic acid (DHA) (n.): Another specific long-chain omega-3 fatty acid crucial for brain and eye health.
- Alpha-linolenic acid (ALA) (n.): A plant-based, short-chain omega-3 fatty acid.
Synonyms
- n-3 fatty acid (n.): An equivalent scientific synonym, where "n" denotes the position of the first double bond.
- ω-3 fatty acid (n.): The same term using the Greek letter omega (ω).
Related Phrases
- Omega-3 supplements (n. phrase): Pills or oils containing concentrated omega-3 fatty acids.
- Many people take omega-3 supplements for heart health.
- Omega-3 rich (adj. phrase): Describing a food high in these fatty acids.
- Mackerel is an omega-3 rich fish.
Noun
-
a polyunsaturated fatty acid whose carbon chain has its first double valence bond three carbons from the beginning
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