ANTIOXIDANT

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 Dictionary entry overview: What does antioxidant mean? 

• ANTIOXIDANT (noun)
  The noun ANTIOXIDANT has 1 sense:

1. substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides

  Familiarity information: ANTIOXIDANT used as a noun is very rare.

 Dictionary entry details 

• ANTIOXIDANT (noun)

Sense 1

Meaning:

Substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides

Classified under:

Nouns denoting substances

Hypernyms ("antioxidant" is a kind of...):

inhibitor (a substance that retards or stops an activity)

Hyponyms (each of the following is a kind of "antioxidant"):

glutathione peroxidase (an enzyme in the body that is a powerful scavenger of free radicals)

atomic number 34; Se; selenium (a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite))

carotenoid (any of a class of highly unsaturated yellow to red pigments occurring in plants and animals)

rust inhibitor (antioxidant that inhibits the formation of rust)

beta-naphthol (an isomer of naphthol used in rubber as an antioxidant)

E; tocopherol; vitamin E (a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body)

ascorbic acid; C; vitamin C (a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy)

 Context examples 

Melatonin helps control the body’s sleep cycle, and is an antioxidant.

(Melatonin, NCI Dictionary)

An orally available, dietary supplement consisting of lyophilized blueberry powder, with antioxidant and potential chemopreventive and chemosensitizing activity.

(Blueberry Powder Supplement, NCI Thesaurus)

Black teas also contain other phytochemicals such as flavonoid and flavonoid-related compounds with strong antioxidant effects.

(Black Tea, NCI Thesaurus)

A naturally occurring organoselenium compound found in many plants, including garlic, onions, and broccoli, with potential antioxidant and chemopreventive activities.

(Methylselenocysteine, NCI Thesaurus)

A nutritional supplement containing an extract of the skin of Muscadine grape (Vitis rotundifolia), with anti-inflammatory, antioxidant and potential chemopreventive activities.

(Muscadine Grape Skin Extract, NCI Thesaurus)

A dietary supplement containing the modified citrus pectin (MCP) derived from the soluble fiber of citrus fruit peels and a galectin-3 inhibitor with potential antioxidant, hypocholesterolemic, immunostimulatory, metal chelating, and anti-metastatic activities.

(Modified Citrus Pectin Supplement, NCI Thesaurus)

Se-methyl-seleno-L-cysteine can act as an antioxidant and may help prevent or slow the growth of cancer cells.

(Methylselenocysteine, NCI Dictionary)

A dietary supplement containing an extract powder derived from the root of the ashwagandha shrub with potential antineoplastic, antioxidant, immunostimulating and anti-angiogenic activities.

(Ashwagandha Root Powder Extract, NCI Thesaurus)

It is an antioxidant that helps prevent cell damage caused by free radicals (highly reactive chemicals).

(Ascorbic acid, NCI Dictionary)

Meanwhile, niacin and antioxidants showed a very small effect that might signify an increased risk of death from any cause.

(Most Popular Supplements Provide No Health Benefit, The Titi Tudorancea Bulletin)