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

Recent Examples on the Web

Chang explains rosehip oil has a high concentration of fatty acids, like linoleic and oleic acid, which have antioxidant, moisturizing, and skin protective effects. — Audrey Noble, Harper's BAZAAR, "The Beauty Benefits of Rosehip Oil," 2 May 2019 So that’s really good at naturally giving color and flush to the skin, getting up antioxidants, helping with lymphatic drainage, helping to improve your sleep patterns. — Roxanne Adamiyatt, Town & Country, "What Does a Pre-Oscars Facial Really Entail?," 23 Feb. 2019 These antioxidants, also known as carotenoids, help to fight off oxidative stress in your body and may protect against chronic disease. — Alex Van Buren, Health.com, "Why Basil Is So Good for You—Plus 14 Ways to Use More of It All Summer Long," 14 May 2018 One reason direct physical contact with the ground might have beneficial physiological effects is the earth's surface has a negative charge and is constantly generating electrons that could neutralize free radicals, acting as antioxidants. — Carrie Dennett, chicagotribune.com, "Could walking barefoot on grass improve your health? Some science suggests it can.," 11 July 2018 Use antioxidants and take omega-3, -9, magnesium, glutathione, and probiotic supplements. — Ashley Weatherford, The Cut, "The Skin-Care Routine Behind TV’s Most Fashionable Assassin," 30 May 2018 As natural antioxidants, these minerals prevent cell death that can lead to the disease, as well as the paralysis and heart failure associated with it. — Elaina Zachos, National Geographic, "Exclusive: Fatal Disease Likely Found in Lion Cubs for First Time," 11 Apr. 2018 Produce is rich in antioxidants, which can help prevent damage to hair cells in the inner ear. — Meghan Rabbitt, Woman's Day, "How To Recapture Peace and Quiet In a Noisy World," 27 Mar. 2019 Up collection is full of antioxidants, like hibiscus and argan extracts, to nourish the skin. — Maya Allen, Marie Claire, "Everything In Amazon's Fast Beauty Co. Sheet Mask Line Is Under $20," 14 Mar. 2019

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

16 May 2019

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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