antioxidant

noun

an·​ti·​ox·​i·​dant ˌan-tē-ˈäk-sə-dənt 

ˌan-ˌtī-

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

antioxidant adjective

Examples of antioxidant in a Sentence

Recent Examples on the Web

While there’s no one-size-fits-all dietary recommendation to help manage acne, Palm generally recommends eating a nutritious diet that is rich in antioxidants, fresh fruits and vegetables, fiber, lean proteins, and healthy fats to support overall skin health. —Alyssa Hui, Verywell Health, 25 June 2024

These foods also contain fiber, antioxidants, and other nutrients that are important for health, such as vitamins A and C and potassium. —Barbie Cervoni, Health, 22 June 2024

Serums or creams with antioxidants like Vitamin C also minimize wrinkles. —Carlos Wolf, Miami Herald, 20 June 2024

What’s more, Van Eck says, chia seeds are packed with antioxidants, substances that can protect against everything from heart disease to cancer. —Caroline Tien, SELF, 18 June 2024

Word History

First Known Use

1919, in the meaning defined above

Kids Definition

antioxidant

noun

an·​ti·​ox·​i·​dant ˌant-ē-ˈäk-səd-ənt 

ˌan-ˌtī-

: a substance that opposes oxidation or prevents or makes difficult reactions made easier by oxygen

Medical Definition

antioxidant

noun

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

: 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

antioxidant adjective