Omega-3 fatty acid
WordNet
noun
(1) A polyunsaturated fatty acid whose carbon chain has its first double valence bond three carbons from the beginning
WiktionaryText
Noun
omega-3 fatty acid
- any polyunsaturated fatty acid having a double bond between the third and fourth carbon atoms from the end of the molecule farthest from the carboxylic acid; they are found in green vegetables and in the oils of fish such as salmon and mackerel; they are essential fatty acids, and seem to be beneficial in reducing the risk of heart disease