preservative
noun
[ prɪˈzəːvətɪv ]
• a substance used to preserve foodstuffs, wood, or other materials against decay.
• "salt has been used for centuries as a preservative"
preservative
adjective
• acting to preserve something.
• "the preservative effects of freezing"
Origin:
late Middle English: via Old French from medieval Latin praeservativus, from late Latin praeservat- ‘kept’, from the verb praeservare (see preserve).
