# antioxidant

/ˌæntiˈɑksədənt/ (US) · /ˌæntɪˈɒksɪdənt/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/antioxidant
Updated: 2026-05-18

## Definition

a substance that helps protect your body from damage caused by harmful molecules. You often find them in foods like fruits and vegetables.

For teachers: a substance that inhibits the oxidation of other substances. In biological contexts, it refers to a molecule that neutralises free radicals, thus preventing or delaying cell damage.

## Examples

- Eating more berries provides your body with natural antioxidants.
- Many skincare products contain antioxidants to help protect the skin from environmental damage caused by pollution and UV rays.
- While the body produces its own antioxidants, a diet rich in plant-based foods is essential for maintaining a healthy balance against oxidative stress.

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