preserver

/prɪˈzɜrvər/
noun
  1. A person or thing that keeps something safe from harm, decay, or loss.
    • The museum acts as a preserver of local history.
    • He sees himself as a preserver of the natural environment.
    • She is a preserver of old traditions in her community.
  2. A substance used to keep food or other materials from spoiling or decaying.
    • Vitamin E oil can act as a natural preserver in homemade lotions.
    • Some people avoid products with artificial preservers.
    • Salt has been used as a food preserver for centuries.
Antonyms
What does "preserver" mean? | whatsthatwordmean | whatsthatwordmean