antioxidant

[ an-tee-ok-si-duh nt, an-tahy- ]
/ ˌæn tiˈɒk sɪ dənt, ˌæn taɪ- /

noun

Chemistry. any substance that inhibits oxidation, as a substance that inhibits oxidative deterioration of gasoline, rubbers, plastics, soaps, etc.
Biochemistry. an enzyme or other organic substance, as vitamin E or beta carotene, that is capable of counteracting the damaging effects of oxidation in animal tissues.

adjective

Chemistry. of or relating to an antioxidant.

Origin of antioxidant

1925–30; anti- + oxidant ( oxid(ize) + -ant)

Example sentences from the Web for antioxidant

British Dictionary definitions for antioxidant

antioxidant
/ (ˌæntɪˈɒksɪdənt) /

noun

any substance that retards deterioration by oxidation, esp of fats, oils, foods, petroleum products, or rubber
biology a substance, such as vitamin C, vitamin E, or beta carotene, that counteracts the damaging effects of oxidation in a living organism

Scientific definitions for antioxidant

antioxidant
[ ăn′tē-ŏksĭ-dənt, ăn′tī- ]

A chemical compound or substance that inhibits oxidation. Certain vitamins, such as vitamin E, are antioxidants and may protect body cells from damage caused by the oxidative effects of free radicals.