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English definition of “Omega-3”

Omega-3

noun [U] uk   /ˌəʊ.mɪ.ɡəˈθriː/ us    /ˌoʊ-/
a substance in the oil from some fish such as tuna and salmon and in some seeds, thought to be good for your health
(Definition of Omega-3 from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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