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antioxidant

American  
[an-tee-ok-si-duhnt, an-tahy-] / ˌæn tiˈɒk sɪ dənt, ˌæn taɪ- /

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 British  
/ 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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

antioxidant Scientific  
/ ăn′tē-ŏksĭ-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.


Etymology

Origin of antioxidant

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"In the experimental models, we observed reduced edema, improved joint parameters, and modulation of inflammatory mediators, suggesting antioxidant and tissue-protective actions," says Arena.

From Science Daily

Their assessment also incorporated the nutritional makeup of foods, including factors such as carbohydrate, fat, and antioxidant vitamin and mineral content, along with the level of industrial processing involved.

From Science Daily

"We hypothesized there was likely something real behind the hype because rosemary contains many antioxidants," said Pang, co-lead author of the study.

From Science Daily

Coffee contains potent antioxidant and anti-inflammatory compounds that may help protect cells from aging-related damage.

From Science Daily

"It's very high in antioxidants, in fibres and unsaturated fatty acids, and in different minerals that make it very popular among people who do sports," he says.

From BBC