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English definition of “vitamin”

vitamin

noun [C] uk   /ˈvɪt.ə.mɪn/ us    /ˈvaɪ.t̬ə-/
B2 any of a group of natural substances that are necessary in small amounts for the growth and good health of the body: a vitamin pill Oranges are full of vitamin C.
(Definition of vitamin from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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