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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Recent Examples of antioxidant from the Web
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Glutathione is an antioxidant naturally found in human cells that neutralizes free radicals, boosts the immune system and detoxifies the body.
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Green tea contains antioxidants, which help to prevent aging, cell damage, and diseases such as Alzheimer's, Parkinson's, and a variety of cancers.
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The antioxidants found in extra virgin olive oil promote a healthy scalp and new hair growth.
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An antioxidant found in strawberries and other plants protects cognitive function in a mouse model of aging, according to research from Salk Institute scientists that reinforces earlier studies.
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Cocoa contains antioxidants as well as a nutrient called epicatechin, which is thought to help widen blood vessels and increase blood flow, an important aspect of health and recovery.
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The germ is loaded with protein, B vitamins, several minerals, antioxidants, phytochemicals (biologically active compounds in plants) and essential fatty acids.
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Red wines contain the skin of the grape and have extra antioxidants, though white wine may also have some benefits.
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Antioxidants such as NAC (or n-acetylcysteine) are used in high doses by the military to protect the brain after blast-injury concussions.
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.
First Known Use of antioxidant
1919
ANTIOXIDANT Defined for English Language Learners
antioxidant
play
noun
Definition of antioxidant for English Language Learners
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: a substance that is added to food and other products to prevent harmful chemical reactions in which oxygen is combined with other substances
Medical Dictionary
antioxidant
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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
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antioxidant
adjectiveLearn More about antioxidant
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Britannica English: Translation of antioxidant for Arabic speakers Britannica.com: Encyclopedia article about antioxidant
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