English Reference

Word

antioxidant

Phoneticsan·tiox·i·dant

US/ˌæntiˈɑksədənt/

UK/ˌæntɪˈɒksɪdənt/

Definition

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

n. 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.”

Examples

simple

“Eating more berries provides your body with natural antioxidants.”

contextual

“Many skincare products contain antioxidants to help protect the skin from environmental damage caused by pollution and UV rays.”

complex

“While the body produces its own antioxidants, a diet rich in plant-based foods is essential for maintaining a healthy balance against oxidative stress.”

Real-World Examples

“Curcumin, the natural compound responsible for turmeric's vivid yellow color, is widely studied for its anti-inflammatory and antioxidant properties.”
ScienceDaily · 26 Aug 2026
“The cultivated Spirulina also contained other bioactive compounds associated with antioxidant, anti-inflammatory, and immune-boosting properties.”
ScienceDaily · 30 Aug 2026

Etymology

From anti- + oxidant.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
B2 · Upper Intermediate
Frequency
Occasional
Updated

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English Reference