antioxidant /an-ti-okˈsi-dənt/

1. A substance that prevents or inhibits oxidation
2. A substance, such as vitamin C, that counters the deleterious effects of oxidizing agents in the human body (also adjective)

• doublenesses
• double obelisk
• double obelisks
• double obelus
• double or quits
• double-or-quits
• double-page spread
• double-page spreads
• double-park
• double-parked
• double-parking
• double-parks
• double play
• double plays
• double pneumonia
• double procession
• double-quick
• doubler
• double reed
• double reeds
• double refraction
• double rollover
• doublers
• doubles
• double salt