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Definition of antioxidant

antioxidant

/ˌæn.tiˈɑːk.sɪ.dənt/
an · ti · ox · i · dant
Plural:antioxidants
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antioxidant Lexical Profile

antioxidant Game Scores & Validity

• noun

1

A substance, such as vitamin C or vitamin E, that inhibits oxidation and counteracts the damaging effects of free radicals in living tissues or prevents the deterioration of stored food products.

Example

"Blueberries and dark leafy greens are rich in natural antioxidants that support cellular health."

Synonyms
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Antonyms
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• adjective

1

Having the property of inhibiting oxidation or protecting biological cells from damage caused by free radicals.

Example

"Green tea is widely studied for its potent antioxidant properties."

Synonyms
View all synonyms for antioxidant
Antonyms
View all antonyms for antioxidant

• Rhymes for antioxidant

• Nearby Words

antinausea
antinuclear
antinuke
antioxidant
antiparasitic
antipasto
antipathy

Word Origin & Etymology

Coined in the early 20th century from the Greek prefix 'anti-' (against) and 'oxidant', originally referring to industrial chemicals that prevented the corrosion of metals or the vulcanization of rubber before being adopted in biochemistry and nutrition.

Cite this Entry

Wordmom. (2026). Definition of Antioxidant. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/antioxidant
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