1. a substance added to food or other products to prevent decay or spoilage

1. having the power to preserve or protect from decay

Examples

• The bread contains no artificial preservatives.
• Many canned foods use salt as a natural preservative.
• She prefers organic products without chemical preservatives.
• The museum uses preservative treatments on ancient artifacts.
• Vitamin E acts as a preservative in many cosmetics.
• The preservative qualities of honey have been known for centuries.