omega-61
/ˌəʊmɪɡəˈsɪks/(also ω-6) Biochemistry
adjective
Designating unsaturated fatty acids whose molecules have a double bond between the carbon atoms that are sixth and fifth from the end of the hydrocarbon chain. Also written ω-6.
- Such acids are found especially in nuts, seeds, and vegetable oils..
noun
An omega-six fatty acid.
Origin
1970s. From omega + six, ω being the symbol of the terminal carbon atom in a fatty acid molecule.
omega-32
/ˌəʊmɪɡəˈθri/(also ω-3) Biochemistry
adjective
Designating unsaturated fatty acids whose molecules have a double bond between the carbon atoms that are third and second from the end of the hydrocarbon chain. Also written ω-3.
- Such acids are found especially in fish oils..
noun
An omega-three fatty acid.
Origin
1960s; earliest use found in Journal Nutrition. From omega + three noun, ω being the symbol of the terminal carbon atom in a fatty acid molecule.