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English definition of “supplement”

supplement

verb [T]     /ˈsʌp.lɪ.ment/
C2 to add something to something to make it larger or better: He supplements (= adds to) his income by working in a bar in the evening. Some vegetarians like to supplement their diets with iron tablets.Augmenting and supplementing
(Definition of supplement verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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