omega-3adj.n.

Brit.

/ˌəʊmᵻɡəˈθriː/, U.S.

/oʊˌmeɪɡəˈθri/,

/oʊˌmɛɡəˈθri/

Forms: 1900s– omega-3, 1900s– ω-3.

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

Etymology: < omega n. + three adj. and n., ω being the symbol of the terminal carbon atom in a fatty acid molecule.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 third and second from the end of the hydrocarbon chain. Also written ω-3.Such acids are found especially in fish oils.

ΚΠ

1967 Jrnl. Nutrition 92 93/2 The purpose of this study was to determine the effect of ω3 acids on the growth and development of rainbow fingerlings.

1979 Lancet 1 Sept. 433 A high consumption of ω-3 polyunsaturated fatty acids (such as cis 5, 8, 11, 14, 17-eicosapentaenoic acid (C20:5)) by Eskimos increased the proportion of ω-3 polyunsaturated fatty acids in the platelets.

1989 Food & Wine Apr. 150/3 Even better documented are the nutritional gains to be had from fish—particularly the cardiovascular benefits of omega-3 fatty acids.

1996 Independent 29 Oct. ii. 11/3 The optimum dose of omega-3 oil is thought to be about 800mg a day.

2000 Daily Tel. 26 Apr. 21/1 Omega-3 fish oil supplements have been shown to improve painful periods in teenage girls.

B. n.

An omega-three fatty acid.

ΚΠ

1989 Food & Wine Apr. 150/4 Fish convert the omega-3s from algae and other vegetation into EPA and DHA.

1993 New Scientist 2 Oct. 30/1 Blood samples showed the highest levels of a polyunsaturated fat called omega-3, found enriched in fish oil.

1998 BBC Vegetarian Good Food Sept. 96/1 Omega-3s are found in oily fish, eggs, soya oil,..and dark green vegetables.

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-3
释义	omega-3adj.n. Brit. /ˌəʊmᵻɡəˈθriː/, U.S. /oʊˌmeɪɡəˈθri/, /oʊˌmɛɡəˈθri/ Forms: 1900s– omega-3, 1900s– ω-3. Origin: Formed within English, by compounding. Etymons: omega n., three adj. and n. Etymology: < omega n. + three adj. and n., ω being the symbol of the terminal carbon atom in a fatty acid molecule.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 third and second from the end of the hydrocarbon chain. Also written ω-3.Such acids are found especially in fish oils. ΚΠ 1967 Jrnl. Nutrition 92 93/2 The purpose of this study was to determine the effect of ω3 acids on the growth and development of rainbow fingerlings. 1979 Lancet 1 Sept. 433 A high consumption of ω-3 polyunsaturated fatty acids (such as cis 5, 8, 11, 14, 17-eicosapentaenoic acid (C20:5)) by Eskimos increased the proportion of ω-3 polyunsaturated fatty acids in the platelets. 1989 Food & Wine Apr. 150/3 Even better documented are the nutritional gains to be had from fish—particularly the cardiovascular benefits of omega-3 fatty acids. 1996 Independent 29 Oct. ii. 11/3 The optimum dose of omega-3 oil is thought to be about 800mg a day. 2000 Daily Tel. 26 Apr. 21/1 Omega-3 fish oil supplements have been shown to improve painful periods in teenage girls. B. n. An omega-three fatty acid. ΚΠ 1989 Food & Wine Apr. 150/4 Fish convert the omega-3s from algae and other vegetation into EPA and DHA. 1993 New Scientist 2 Oct. 30/1 Blood samples showed the highest levels of a polyunsaturated fat called omega-3, found enriched in fish oil. 1998 BBC Vegetarian Good Food Sept. 96/1 Omega-3s are found in oily fish, eggs, soya oil,..and dark green vegetables. 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.1967
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