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English definition of “preservative”

preservative

noun     /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.Carpentry and joinery [C] a chemical used to stop food from decaying: This bread is completely free from artificial preservatives. No added preservatives. natural preservativesAdditives in food and drinks
(Definition of preservative noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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