antioxidant

[ an-tee-ok-si-duhnt, an-tahy- ]

noun

1. Chemistry. any substance that inhibits oxidation, as a substance that inhibits oxidative deterioration of gasoline, rubbers, plastics, soaps, etc.
2. 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

1. Chemistry. of or relating to an antioxidant.

antioxidant

/ ˌæntɪˈɒksɪdənt /

noun

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

antioxidant

/ ăn′tē-ŏk′sĭ-dənt,ăn′tī- /

1. 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.

Word History and Origins

Origin of antioxidant¹

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

Example Sentences

For example, copper ions are involved in antioxidant defense.

From Science Daily

“It’s just supposed to be good for your body — helping with antioxidants, clearing you out. It’s disgusting, though, girl. It’s so nasty.”

From Los Angeles Times

Aside from increasing alertness, caffeine has also demonstrated antioxidant effects and some protection against a range of chronic and neurodegenerative diseases.

From Salon

Laboratory studies revealed the plants were high in antioxidants and antimicrobials.

From BBC

On the health front, cucumbers are packed with beneficial nutrients and antioxidants.

From Salon