Definition of Omega-3 noun from the Oxford Advanced American Dictionary

 

Omega-3

 noun
noun
NAmE//oʊˌmeɪɡə ˈθri//
 
(also Omega-3 fatty acid
 
)
 
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any of a group of acids, found mainly in fish oils, that many people think are important for human health the debate about the health benefits of taking Omega-3 supplements
See the Oxford Advanced Learner's Dictionary entry: Omega-3