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English definition of “preservative”

preservative

noun uk   /prɪˈzɜː.və.tɪv/ us    /-ˈzɝː.və.t̬ɪv/
[C or U] a substance used to prevent decay in wood: a timber/wood preservative The fence has been treated with preservative. [C] a chemical used to stop food from decaying: This bread is completely free from artificial preservatives. No added preservatives. natural preservatives
(Definition of preservative from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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