glutathione peroxidase - an enzyme in the body that is a powerful scavenger of free radicals

atomic number 34, Se, selenium - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)

carotenoid - any of a class of highly unsaturated yellow to red pigments occurring in plants and animals

inhibitor - a substance that retards or stops an activity

rust inhibitor - antioxidant that inhibits the formation of rust

beta-naphthol - an isomer of naphthol used in rubber as an antioxidant

E, tocopherol, vitamin E - a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body

ascorbic acid, vitamin C - a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy