antioxidant

noun

an·ti·ox·i·dant | \ˌan-tē-ˈäk-sə-dənt,

ˌan-ˌtī-\

Definition of antioxidant

: a substance (such as beta-carotene or vitamin C) that inhibits oxidation or reactions promoted by oxygen, peroxides, or free radicals

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Examples of antioxidant in a Sentence

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Lead author Erikka Loftfield, a researcher at the U.S. National Cancer Institute, said coffee contains more than 1,000 chemical compounds including antioxidants, which help protect cells from damage. — Lindsey Tanner, courant.com, "Fresh grounds for coffee: Study shows it may boost longevity," 3 July 2018 Lead author Erikka Loftfield, a researcher at the US National Cancer Institute, said coffee contains more than 1,000 chemical compounds including antioxidants, which help protect cells from damage. — Lindsey Tanner, BostonGlobe.com, "Drinking up to 8 cups of coffee a day might help you live longer, new study says," 3 July 2018 Lead author Erikka Loftfield, a researcher at the U.S. National Cancer Institute, said coffee contains more than 1,000 chemical compounds including antioxidants, which help protect cells from damage. — Lindsey Tanner, The Seattle Times, "Fresh grounds for coffee: Study shows it may boost longevity," 2 July 2018 Lead author Erikka Loftfield, a researcher at the U.S. National Cancer Institute, said coffee contains more than 1,000 chemical compounds including antioxidants, which help protect cells from damage. — CBS News, "Coffee may boost chances for a longer life, study shows," 2 July 2018 Lead author Erikka Loftfield, a researcher at the U.S. National Cancer Institute, said coffee contains more than 1,000 chemical compounds including antioxidants, which help protect cells from damage. — Washington Post, "Fresh grounds for coffee: Study shows it may boost longevity," 2 July 2018 Some research is investigating coconut oil’s possible connection to the prevention of Alzheimer’s disease, and VCO does provide phenolic antioxidants, which have been tied to health benefits, including anti-aging. — Health.com, "Everything You've Ever Wondered About Coconut Oil, Explained," 2 Apr. 2018 Coffee does contain antioxidants, which may help protect the body against potentially cancer-causing molecules called free radicals, according to the Mayo Clinic. — Time, "California Coffee Shops Will Warn Customers About This Possibly Cancer-Causing Chemical. Here's What to Know About It," 30 Mar. 2018 Big Coffee didn’t deny that acrylamide was found in the coffee, but argued it was only found at low levels and was outweighed by other benefits such as antioxidants that reduce cancer risk. — Washington Post, "California moves to clear coffee of cancer-risk stigma," 17 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antioxidant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Last Updated

3 Oct 2018

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Time Traveler for antioxidant

The first known use of antioxidant was in 1919

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More Definitions for antioxidant

antioxidant

noun

English Language Learners Definition of antioxidant

: a substance that is added to food and other products to prevent harmful chemical reactions in which oxygen is combined with other substances

See the full definition for antioxidant in the English Language Learners Dictionary

antioxidant

noun

an·ti·ox·i·dant | \ˌant-ē-ˈäk-səd-ənt, ˌan-ˌtī-

Medical Definition of antioxidant

: any of various substances (as beta-carotene, vitamin C, and alpha-tocopherol) that inhibit oxidation or reactions promoted by oxygen and peroxides and that include many held to protect the living body from the deleterious effects of free radicals