omega-6adj.n.

Brit.

/ˌəʊmᵻɡəˈsɪks/, U.S.

/oʊˌmeɪɡəˈsɪks/,

/oʊˌmɛɡəˈsɪks/

Forms: 1900s– omega-6, 1900s– ω-6.

Origin: Formed within English, by compounding. Etymons: omega n., six adj.

Etymology: < omega n. + six adj., ω being the symbol of the terminal carbon atom in a fatty acid molecule. Compare earlier omega-3 adj.Written with numerical symbol for the second element and sometimes also with the Greek letter symbol ω for the first.

Biochemistry.

A. adj.

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.

ΚΠ

1976 Jrnl. Chromatogr. Sci. 14 25/1 Tetraenes were of the ω-6 series. Small amounts of ω-6 and ω-3 pentaenes were detected.

1986 San Diego Union Tribune (Nexis) 13 Oct. d1 Omega-6 fatty acids are metabolized into (among other things) arachidonic acid, which in turn is broken down by enzymes into substances called prostaglandins and thromboxane.

1998 Sunday Times (Nexis) 15 Mar. We tend to eat a lot of vegetable oils and margarines containing omega 6 fats.

2001 Jrnl. Agric. & Food Chem. 49 5662 Cooked samples supplied more ω-6 polyunsaturated fatty acids..than raw samples.

B. n.

An omega-six fatty acid.

ΚΠ

1981 Jrnl. Neurochem. 37 1057 The modifications in polyunsaturated fatty acids were the opposite of those in neurons: omega-3 being decreased and omega-6 increased.

1992 Elle Jan. 104/4 Lipids, in particular the essential fatty acids (EFAs) Omega 3 and Omega 6, are crucial to brain development.

1998 Sunday Tel. 25 Jan. (Mag.) 41 (advt.) Omega-3 and Omega-6 contain the key nutrients gamma-linolenic acid (GLA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), that help maintain healthy circulation and joint mobility.

2000 Pets Mar. 54/1 Health food stores stock a variety of fatty acids, but you should ask your vet to recommend one that contains the proper mix of omega-3's and omega-6's.

This is a new entry (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	omega-6
释义	omega-6adj.n. Brit. /ˌəʊmᵻɡəˈsɪks/, U.S. /oʊˌmeɪɡəˈsɪks/, /oʊˌmɛɡəˈsɪks/ Forms: 1900s– omega-6, 1900s– ω-6. Origin: Formed within English, by compounding. Etymons: omega n., six adj. Etymology: < omega n. + six adj., ω being the symbol of the terminal carbon atom in a fatty acid molecule. Compare earlier omega-3 adj.Written with numerical symbol for the second element and sometimes also with the Greek letter symbol ω for the first. Biochemistry. A. adj. 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. ΚΠ 1976 Jrnl. Chromatogr. Sci. 14 25/1 Tetraenes were of the ω-6 series. Small amounts of ω-6 and ω-3 pentaenes were detected. 1986 San Diego Union Tribune (Nexis) 13 Oct. d1 Omega-6 fatty acids are metabolized into (among other things) arachidonic acid, which in turn is broken down by enzymes into substances called prostaglandins and thromboxane. 1998 Sunday Times (Nexis) 15 Mar. We tend to eat a lot of vegetable oils and margarines containing omega 6 fats. 2001 Jrnl. Agric. & Food Chem. 49 5662 Cooked samples supplied more ω-6 polyunsaturated fatty acids..than raw samples. B. n. An omega-six fatty acid. ΚΠ 1981 Jrnl. Neurochem. 37 1057 The modifications in polyunsaturated fatty acids were the opposite of those in neurons: omega-3 being decreased and omega-6 increased. 1992 Elle Jan. 104/4 Lipids, in particular the essential fatty acids (EFAs) Omega 3 and Omega 6, are crucial to brain development. 1998 Sunday Tel. 25 Jan. (Mag.) 41 (advt.) Omega-3 and Omega-6 contain the key nutrients gamma-linolenic acid (GLA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), that help maintain healthy circulation and joint mobility. 2000 Pets Mar. 54/1 Health food stores stock a variety of fatty acids, but you should ask your vet to recommend one that contains the proper mix of omega-3's and omega-6's. This is a new entry (OED Third Edition, March 2004; most recently modified version published online March 2022). < adj.n.1976
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