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Adjective preservative has 1 sense
  1. preservative - tending or having the power to preserve; "the timbers should be treated with a preservative"
    Antonym:     unprotective (indirect, via protective)
,Noun preservative has 1 sense
  1. preservative - a chemical compound that is added to protect against decay or decomposition
    --1 is a kind of     compound, chemical compound
    --1 has particulars: spice
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