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

These effects seem to be related to the fruit's antioxidant and anti-inflammatory properties.12 May Improve Sleep Cherry juice may be helpful for individuals with certain sleep problems. —Cynthia Sass, Mph, Health, 3 June 2024

But the supplement was rich in antioxidants, commonly used in ayurvedic medicine and hard to find. —Andrea Chang, Los Angeles Times, 2 June 2024

Drink plenty of water and eat a diet rich in antioxidants, vitamins, and minerals. —Dominique Fluker, Essence, 29 May 2024

In the context of a balanced diet, the fruit becomes a good source of antioxidants, potassium and fiber — nutrients that boost immunity, aid the digestion process, and offer protection from chronic diseases, according to a 2023 study. —Caroline C. Boyle, USA TODAY, 19 May 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